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Finding the Fourth Proportional to 89,922.40, 135,029.40 and 60,470.80

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Solution

The fourth proportional to 89,922.40, 135,029.40 and 60,470.80 is: 90,804.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,922.40 : 135,029.40 = 60,470.80 : x
  2. Step 2: Convert to fraction form
    89,922.40/135,029.40 = 60,470.80/x
  3. Step 3: Cross multiply
    89,922.40x = 135,029.40 × 60,470.80
  4. Step 4: Simplify right side
    89,922.40x = 8,165,335,841.52
  5. Step 5: Solve for x
    x = 8,165,335,841.52/89,922.40
  6. Step 6: Final answer
    x = 90,804.25

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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.