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Finding the Fourth Proportional to 91,828.80, 137,512.80 and 60,494.40

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Solution

The fourth proportional to 91,828.80, 137,512.80 and 60,494.40 is: 90,589.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,828.80 : 137,512.80 = 60,494.40 : x
  2. Step 2: Convert to fraction form
    91,828.80/137,512.80 = 60,494.40/x
  3. Step 3: Cross multiply
    91,828.80x = 137,512.80 × 60,494.40
  4. Step 4: Simplify right side
    91,828.80x = 8,318,754,328.32
  5. Step 5: Solve for x
    x = 8,318,754,328.32/91,828.80
  6. Step 6: Final answer
    x = 90,589.82

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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.