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Finding the Fourth Proportional to 90,423.68, 124,764.48 and 54,119.48

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Solution

The fourth proportional to 90,423.68, 124,764.48 and 54,119.48 is: 74,672.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,423.68 : 124,764.48 = 54,119.48 : x
  2. Step 2: Convert to fraction form
    90,423.68/124,764.48 = 54,119.48/x
  3. Step 3: Cross multiply
    90,423.68x = 124,764.48 × 54,119.48
  4. Step 4: Simplify right side
    90,423.68x = 6,752,188,780.07
  5. Step 5: Solve for x
    x = 6,752,188,780.07/90,423.68
  6. Step 6: Final answer
    x = 74,672.79

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1.5x scale

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.