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Finding the Fourth Proportional to 90,348.59, 124,684.29 and 54,531.60

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Solution

The fourth proportional to 90,348.59, 124,684.29 and 54,531.60 is: 75,255.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,348.59 : 124,684.29 = 54,531.60 : x
  2. Step 2: Convert to fraction form
    90,348.59/124,684.29 = 54,531.60/x
  3. Step 3: Cross multiply
    90,348.59x = 124,684.29 × 54,531.60
  4. Step 4: Simplify right side
    90,348.59x = 6,799,233,828.56
  5. Step 5: Solve for x
    x = 6,799,233,828.56/90,348.59
  6. Step 6: Final answer
    x = 75,255.57

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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.