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Finding the Fourth Proportional to 90,543.54, 124,948.29 and 50,257.80

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Solution

The fourth proportional to 90,543.54, 124,948.29 and 50,257.80 is: 69,354.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,543.54 : 124,948.29 = 50,257.80 : x
  2. Step 2: Convert to fraction form
    90,543.54/124,948.29 = 50,257.80/x
  3. Step 3: Cross multiply
    90,543.54x = 124,948.29 × 50,257.80
  4. Step 4: Simplify right side
    90,543.54x = 6,279,626,169.16
  5. Step 5: Solve for x
    x = 6,279,626,169.16/90,543.54
  6. Step 6: Final answer
    x = 69,354.77

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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.