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Finding the Fourth Proportional to 90,651.60, 125,117.10 and 57,925.08

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Solution

The fourth proportional to 90,651.60, 125,117.10 and 57,925.08 is: 79,948.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,651.60 : 125,117.10 = 57,925.08 : x
  2. Step 2: Convert to fraction form
    90,651.60/125,117.10 = 57,925.08/x
  3. Step 3: Cross multiply
    90,651.60x = 125,117.10 × 57,925.08
  4. Step 4: Simplify right side
    90,651.60x = 7,247,418,026.87
  5. Step 5: Solve for x
    x = 7,247,418,026.87/90,651.60
  6. Step 6: Final answer
    x = 79,948.04

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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.