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Finding the Fourth Proportional to 89,864.40, 134,812.80 and 37,279.20

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Solution

The fourth proportional to 89,864.40, 134,812.80 and 37,279.20 is: 55,925.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,864.40 : 134,812.80 = 37,279.20 : x
  2. Step 2: Convert to fraction form
    89,864.40/134,812.80 = 37,279.20/x
  3. Step 3: Cross multiply
    89,864.40x = 134,812.80 × 37,279.20
  4. Step 4: Simplify right side
    89,864.40x = 5,025,713,333.76
  5. Step 5: Solve for x
    x = 5,025,713,333.76/89,864.40
  6. Step 6: Final answer
    x = 55,925.52

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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.