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Finding the Fourth Proportional to 88,522.60, 133,043.10 and 77,117.80

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Solution

The fourth proportional to 88,522.60, 133,043.10 and 77,117.80 is: 115,902.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,522.60 : 133,043.10 = 77,117.80 : x
  2. Step 2: Convert to fraction form
    88,522.60/133,043.10 = 77,117.80/x
  3. Step 3: Cross multiply
    88,522.60x = 133,043.10 × 77,117.80
  4. Step 4: Simplify right side
    88,522.60x = 10,259,991,177.18
  5. Step 5: Solve for x
    x = 10,259,991,177.18/88,522.60
  6. Step 6: Final answer
    x = 115,902.51

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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.