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Finding the Fourth Proportional to 72,732.40, 109,050 and 58,709.68

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Solution

The fourth proportional to 72,732.40, 109,050 and 58,709.68 is: 88,025.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,732.40 : 109,050 = 58,709.68 : x
  2. Step 2: Convert to fraction form
    72,732.40/109,050 = 58,709.68/x
  3. Step 3: Cross multiply
    72,732.40x = 109,050 × 58,709.68
  4. Step 4: Simplify right side
    72,732.40x = 6,402,290,604
  5. Step 5: Solve for x
    x = 6,402,290,604/72,732.40
  6. Step 6: Final answer
    x = 88,025.29

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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.