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Finding the Fourth Proportional to 91,248.39, 125,853.39 and 78,523.02

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Solution

The fourth proportional to 91,248.39, 125,853.39 and 78,523.02 is: 108,302.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,248.39 : 125,853.39 = 78,523.02 : x
  2. Step 2: Convert to fraction form
    91,248.39/125,853.39 = 78,523.02/x
  3. Step 3: Cross multiply
    91,248.39x = 125,853.39 × 78,523.02
  4. Step 4: Simplify right side
    91,248.39x = 9,882,388,260.04
  5. Step 5: Solve for x
    x = 9,882,388,260.04/91,248.39
  6. Step 6: Final answer
    x = 108,302.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.