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Finding the Fourth Proportional to 94,132, 129,913.68 and 54,388

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Solution

The fourth proportional to 94,132, 129,913.68 and 54,388 is: 75,062.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,132 : 129,913.68 = 54,388 : x
  2. Step 2: Convert to fraction form
    94,132/129,913.68 = 54,388/x
  3. Step 3: Cross multiply
    94,132x = 129,913.68 × 54,388
  4. Step 4: Simplify right side
    94,132x = 7,065,745,227.84
  5. Step 5: Solve for x
    x = 7,065,745,227.84/94,132
  6. Step 6: Final answer
    x = 75,062.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.