Home / 90,729.35-125,213.51-54,432.16

Finding the Fourth Proportional to 90,729.35, 125,213.51 and 54,432.16

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Solution

The fourth proportional to 90,729.35, 125,213.51 and 54,432.16 is: 75,120.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,729.35 : 125,213.51 = 54,432.16 : x
  2. Step 2: Convert to fraction form
    90,729.35/125,213.51 = 54,432.16/x
  3. Step 3: Cross multiply
    90,729.35x = 125,213.51 × 54,432.16
  4. Step 4: Simplify right side
    90,729.35x = 6,815,641,810.48
  5. Step 5: Solve for x
    x = 6,815,641,810.48/90,729.35
  6. Step 6: Final answer
    x = 75,120.58

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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.