Home / 90,689.50-125,115.66-52,442.02

Finding the Fourth Proportional to 90,689.50, 125,115.66 and 52,442.02

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Solution

The fourth proportional to 90,689.50, 125,115.66 and 52,442.02 is: 72,349.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,689.50 : 125,115.66 = 52,442.02 : x
  2. Step 2: Convert to fraction form
    90,689.50/125,115.66 = 52,442.02/x
  3. Step 3: Cross multiply
    90,689.50x = 125,115.66 × 52,442.02
  4. Step 4: Simplify right side
    90,689.50x = 6,561,317,944.03
  5. Step 5: Solve for x
    x = 6,561,317,944.03/90,689.50
  6. Step 6: Final answer
    x = 72,349.26

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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.