Home / 85,420,111,753.15-128,040,475,080.42-28,740,297,032.08

Finding the Fourth Proportional to 85,420,111,753.15, 128,040,475,080.42 and 28,740,297,032.08

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Solution

The fourth proportional to 85,420,111,753.15, 128,040,475,080.42 and 28,740,297,032.08 is: 43,080,267,754.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,420,111,753.15 : 128,040,475,080.42 = 28,740,297,032.08 : x
  2. Step 2: Convert to fraction form
    85,420,111,753.15/128,040,475,080.42 = 28,740,297,032.08/x
  3. Step 3: Cross multiply
    85,420,111,753.15x = 128,040,475,080.42 × 28,740,297,032.08
  4. Step 4: Simplify right side
    85,420,111,753.15x = 3,679,921,285,939,524,009,984
  5. Step 5: Solve for x
    x = 3,679,921,285,939,524,009,984/85,420,111,753.15
  6. Step 6: Final answer
    x = 43,080,267,754.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.