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Finding the Fourth Proportional to 59,889.20, 89,821.20 and 30,279.20

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Solution

The fourth proportional to 59,889.20, 89,821.20 and 30,279.20 is: 45,412.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,889.20 : 89,821.20 = 30,279.20 : x
  2. Step 2: Convert to fraction form
    59,889.20/89,821.20 = 30,279.20/x
  3. Step 3: Cross multiply
    59,889.20x = 89,821.20 × 30,279.20
  4. Step 4: Simplify right side
    59,889.20x = 2,719,714,079.04
  5. Step 5: Solve for x
    x = 2,719,714,079.04/59,889.20
  6. Step 6: Final answer
    x = 45,412.43

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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.