Home / 87,399,285.60-131,098,928.40-55,087,672.80

Finding the Fourth Proportional to 87,399,285.60, 131,098,928.40 and 55,087,672.80

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Solution

The fourth proportional to 87,399,285.60, 131,098,928.40 and 55,087,672.80 is: 82,631,509.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,399,285.60 : 131,098,928.40 = 55,087,672.80 : x
  2. Step 2: Convert to fraction form
    87,399,285.60/131,098,928.40 = 55,087,672.80/x
  3. Step 3: Cross multiply
    87,399,285.60x = 131,098,928.40 × 55,087,672.80
  4. Step 4: Simplify right side
    87,399,285.60x = 7,221,934,872,129,827
  5. Step 5: Solve for x
    x = 7,221,934,872,129,827/87,399,285.60
  6. Step 6: Final answer
    x = 82,631,509.20

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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.