Home / 85,968,003.70-128,952,005.55-55,357,002.10

Finding the Fourth Proportional to 85,968,003.70, 128,952,005.55 and 55,357,002.10

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Solution

The fourth proportional to 85,968,003.70, 128,952,005.55 and 55,357,002.10 is: 83,035,503.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,968,003.70 : 128,952,005.55 = 55,357,002.10 : x
  2. Step 2: Convert to fraction form
    85,968,003.70/128,952,005.55 = 55,357,002.10/x
  3. Step 3: Cross multiply
    85,968,003.70x = 128,952,005.55 × 55,357,002.10
  4. Step 4: Simplify right side
    85,968,003.70x = 7,138,396,442,030,562
  5. Step 5: Solve for x
    x = 7,138,396,442,030,562/85,968,003.70
  6. Step 6: Final answer
    x = 83,035,503.15

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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.