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Finding the Fourth Proportional to 72,862.52, 109,123.68 and 56,089.46

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Solution

The fourth proportional to 72,862.52, 109,123.68 and 56,089.46 is: 84,003.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,862.52 : 109,123.68 = 56,089.46 : x
  2. Step 2: Convert to fraction form
    72,862.52/109,123.68 = 56,089.46/x
  3. Step 3: Cross multiply
    72,862.52x = 109,123.68 × 56,089.46
  4. Step 4: Simplify right side
    72,862.52x = 6,120,688,284.41
  5. Step 5: Solve for x
    x = 6,120,688,284.41/72,862.52
  6. Step 6: Final answer
    x = 84,003.25

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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.