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Finding the Fourth Proportional to 83,934.40, 125,901.60 and 28,530.40

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Solution

The fourth proportional to 83,934.40, 125,901.60 and 28,530.40 is: 42,795.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,934.40 : 125,901.60 = 28,530.40 : x
  2. Step 2: Convert to fraction form
    83,934.40/125,901.60 = 28,530.40/x
  3. Step 3: Cross multiply
    83,934.40x = 125,901.60 × 28,530.40
  4. Step 4: Simplify right side
    83,934.40x = 3,592,023,008.64
  5. Step 5: Solve for x
    x = 3,592,023,008.64/83,934.40
  6. Step 6: Final answer
    x = 42,795.60

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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.