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Finding the Fourth Proportional to 88,581,695.70, 132,872,543.55 and 72,425,889.30

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Solution

The fourth proportional to 88,581,695.70, 132,872,543.55 and 72,425,889.30 is: 108,638,833.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,581,695.70 : 132,872,543.55 = 72,425,889.30 : x
  2. Step 2: Convert to fraction form
    88,581,695.70/132,872,543.55 = 72,425,889.30/x
  3. Step 3: Cross multiply
    88,581,695.70x = 132,872,543.55 × 72,425,889.30
  4. Step 4: Simplify right side
    88,581,695.70x = 9,623,412,130,161,728
  5. Step 5: Solve for x
    x = 9,623,412,130,161,728/88,581,695.70
  6. Step 6: Final answer
    x = 108,638,833.95

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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.