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Finding the Fourth Proportional to 90,316.60, 124,636.92 and 49,480.91

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Solution

The fourth proportional to 90,316.60, 124,636.92 and 49,480.91 is: 68,283.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,316.60 : 124,636.92 = 49,480.91 : x
  2. Step 2: Convert to fraction form
    90,316.60/124,636.92 = 49,480.91/x
  3. Step 3: Cross multiply
    90,316.60x = 124,636.92 × 49,480.91
  4. Step 4: Simplify right side
    90,316.60x = 6,167,147,350.61
  5. Step 5: Solve for x
    x = 6,167,147,350.61/90,316.60
  6. Step 6: Final answer
    x = 68,283.66

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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.