Home / 85,367,618.37-128,042,809.83-57,878,041.21

Finding the Fourth Proportional to 85,367,618.37, 128,042,809.83 and 57,878,041.21

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Solution

The fourth proportional to 85,367,618.37, 128,042,809.83 and 57,878,041.21 is: 86,811,219.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,367,618.37 : 128,042,809.83 = 57,878,041.21 : x
  2. Step 2: Convert to fraction form
    85,367,618.37/128,042,809.83 = 57,878,041.21/x
  3. Step 3: Cross multiply
    85,367,618.37x = 128,042,809.83 × 57,878,041.21
  4. Step 4: Simplify right side
    85,367,618.37x = 7,410,867,023,664,826
  5. Step 5: Solve for x
    x = 7,410,867,023,664,826/85,367,618.37
  6. Step 6: Final answer
    x = 86,811,219.12

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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.