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Finding the Fourth Proportional to 88,715.84, 133,137.12 and 65,403.20

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Solution

The fourth proportional to 88,715.84, 133,137.12 and 65,403.20 is: 98,151.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,715.84 : 133,137.12 = 65,403.20 : x
  2. Step 2: Convert to fraction form
    88,715.84/133,137.12 = 65,403.20/x
  3. Step 3: Cross multiply
    88,715.84x = 133,137.12 × 65,403.20
  4. Step 4: Simplify right side
    88,715.84x = 8,707,593,686.78
  5. Step 5: Solve for x
    x = 8,707,593,686.78/88,715.84
  6. Step 6: Final answer
    x = 98,151.51

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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.