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Finding the Fourth Proportional to 90,294.32, 124,544.25 and 61,950.80

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Solution

The fourth proportional to 90,294.32, 124,544.25 and 61,950.80 is: 85,449.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,294.32 : 124,544.25 = 61,950.80 : x
  2. Step 2: Convert to fraction form
    90,294.32/124,544.25 = 61,950.80/x
  3. Step 3: Cross multiply
    90,294.32x = 124,544.25 × 61,950.80
  4. Step 4: Simplify right side
    90,294.32x = 7,715,615,922.90
  5. Step 5: Solve for x
    x = 7,715,615,922.90/90,294.32
  6. Step 6: Final answer
    x = 85,449.63

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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.