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Finding the Fourth Proportional to 91,604.85, 137,426.90 and 28,423.62

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Solution

The fourth proportional to 91,604.85, 137,426.90 and 28,423.62 is: 42,641.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,604.85 : 137,426.90 = 28,423.62 : x
  2. Step 2: Convert to fraction form
    91,604.85/137,426.90 = 28,423.62/x
  3. Step 3: Cross multiply
    91,604.85x = 137,426.90 × 28,423.62
  4. Step 4: Simplify right side
    91,604.85x = 3,906,169,841.26
  5. Step 5: Solve for x
    x = 3,906,169,841.26/91,604.85
  6. Step 6: Final answer
    x = 42,641.52

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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.