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Finding the Fourth Proportional to 88,643.10, 133,061.85 and 55,400.70

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Solution

The fourth proportional to 88,643.10, 133,061.85 and 55,400.70 is: 83,161.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,643.10 : 133,061.85 = 55,400.70 : x
  2. Step 2: Convert to fraction form
    88,643.10/133,061.85 = 55,400.70/x
  3. Step 3: Cross multiply
    88,643.10x = 133,061.85 × 55,400.70
  4. Step 4: Simplify right side
    88,643.10x = 7,371,719,633.30
  5. Step 5: Solve for x
    x = 7,371,719,633.30/88,643.10
  6. Step 6: Final answer
    x = 83,161.80

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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.