Home / 90,690.32-125,143.13-50,397.57

Finding the Fourth Proportional to 90,690.32, 125,143.13 and 50,397.57

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Solution

The fourth proportional to 90,690.32, 125,143.13 and 50,397.57 is: 69,543.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,690.32 : 125,143.13 = 50,397.57 : x
  2. Step 2: Convert to fraction form
    90,690.32/125,143.13 = 50,397.57/x
  3. Step 3: Cross multiply
    90,690.32x = 125,143.13 × 50,397.57
  4. Step 4: Simplify right side
    90,690.32x = 6,306,909,402.21
  5. Step 5: Solve for x
    x = 6,306,909,402.21/90,690.32
  6. Step 6: Final answer
    x = 69,543.36

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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.