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Finding the Fourth Proportional to 89,002.40, 133,657.20 and 47,530.40

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Solution

The fourth proportional to 89,002.40, 133,657.20 and 47,530.40 is: 71,377.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,002.40 : 133,657.20 = 47,530.40 : x
  2. Step 2: Convert to fraction form
    89,002.40/133,657.20 = 47,530.40/x
  3. Step 3: Cross multiply
    89,002.40x = 133,657.20 × 47,530.40
  4. Step 4: Simplify right side
    89,002.40x = 6,352,780,178.88
  5. Step 5: Solve for x
    x = 6,352,780,178.88/89,002.40
  6. Step 6: Final answer
    x = 71,377.63

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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.