Home / 85,204,043.20-127,890,045.60-42,121,892.80

Finding the Fourth Proportional to 85,204,043.20, 127,890,045.60 and 42,121,892.80

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Solution

The fourth proportional to 85,204,043.20, 127,890,045.60 and 42,121,892.80 is: 63,224,356.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,204,043.20 : 127,890,045.60 = 42,121,892.80 : x
  2. Step 2: Convert to fraction form
    85,204,043.20/127,890,045.60 = 42,121,892.80/x
  3. Step 3: Cross multiply
    85,204,043.20x = 127,890,045.60 × 42,121,892.80
  4. Step 4: Simplify right side
    85,204,043.20x = 5,386,970,790,950,311
  5. Step 5: Solve for x
    x = 5,386,970,790,950,311/85,204,043.20
  6. Step 6: Final answer
    x = 63,224,356.36

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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.