Home / 87,570,005.20-131,429,657.40-39,122,414.80

Finding the Fourth Proportional to 87,570,005.20, 131,429,657.40 and 39,122,414.80

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Solution

The fourth proportional to 87,570,005.20, 131,429,657.40 and 39,122,414.80 is: 58,716,972.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,570,005.20 : 131,429,657.40 = 39,122,414.80 : x
  2. Step 2: Convert to fraction form
    87,570,005.20/131,429,657.40 = 39,122,414.80/x
  3. Step 3: Cross multiply
    87,570,005.20x = 131,429,657.40 × 39,122,414.80
  4. Step 4: Simplify right side
    87,570,005.20x = 5,141,845,573,824,689
  5. Step 5: Solve for x
    x = 5,141,845,573,824,689/87,570,005.20
  6. Step 6: Final answer
    x = 58,716,972.35

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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.