Home / 91,711.49-137,587.07-28,530.47

Finding the Fourth Proportional to 91,711.49, 137,587.07 and 28,530.47

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Solution

The fourth proportional to 91,711.49, 137,587.07 and 28,530.47 is: 42,801.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,711.49 : 137,587.07 = 28,530.47 : x
  2. Step 2: Convert to fraction form
    91,711.49/137,587.07 = 28,530.47/x
  3. Step 3: Cross multiply
    91,711.49x = 137,587.07 × 28,530.47
  4. Step 4: Simplify right side
    91,711.49x = 3,925,424,188.32
  5. Step 5: Solve for x
    x = 3,925,424,188.32/91,711.49
  6. Step 6: Final answer
    x = 42,801.88

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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.