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Finding the Fourth Proportional to 91,454.40, 137,116.80 and 35,272.80

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Solution

The fourth proportional to 91,454.40, 137,116.80 and 35,272.80 is: 52,884.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,454.40 : 137,116.80 = 35,272.80 : x
  2. Step 2: Convert to fraction form
    91,454.40/137,116.80 = 35,272.80/x
  3. Step 3: Cross multiply
    91,454.40x = 137,116.80 × 35,272.80
  4. Step 4: Simplify right side
    91,454.40x = 4,836,493,463.04
  5. Step 5: Solve for x
    x = 4,836,493,463.04/91,454.40
  6. Step 6: Final answer
    x = 52,884.21

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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.