Home / 91,685.28-137,549.40-28,502.16

Finding the Fourth Proportional to 91,685.28, 137,549.40 and 28,502.16

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Solution

The fourth proportional to 91,685.28, 137,549.40 and 28,502.16 is: 42,759.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,685.28 : 137,549.40 = 28,502.16 : x
  2. Step 2: Convert to fraction form
    91,685.28/137,549.40 = 28,502.16/x
  3. Step 3: Cross multiply
    91,685.28x = 137,549.40 × 28,502.16
  4. Step 4: Simplify right side
    91,685.28x = 3,920,455,006.70
  5. Step 5: Solve for x
    x = 3,920,455,006.70/91,685.28
  6. Step 6: Final answer
    x = 42,759.92

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1.5x scale

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.