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Finding the Fourth Proportional to 89,251.76, 133,824.17 and 28,435.74

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Solution

The fourth proportional to 89,251.76, 133,824.17 and 28,435.74 is: 42,636.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,251.76 : 133,824.17 = 28,435.74 : x
  2. Step 2: Convert to fraction form
    89,251.76/133,824.17 = 28,435.74/x
  3. Step 3: Cross multiply
    89,251.76x = 133,824.17 × 28,435.74
  4. Step 4: Simplify right side
    89,251.76x = 3,805,389,161.66
  5. Step 5: Solve for x
    x = 3,805,389,161.66/89,251.76
  6. Step 6: Final answer
    x = 42,636.58

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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.