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Finding the Fourth Proportional to 90,323.46, 124,620.90 and 52,080

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Solution

The fourth proportional to 90,323.46, 124,620.90 and 52,080 is: 71,855.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,323.46 : 124,620.90 = 52,080 : x
  2. Step 2: Convert to fraction form
    90,323.46/124,620.90 = 52,080/x
  3. Step 3: Cross multiply
    90,323.46x = 124,620.90 × 52,080
  4. Step 4: Simplify right side
    90,323.46x = 6,490,256,472
  5. Step 5: Solve for x
    x = 6,490,256,472/90,323.46
  6. Step 6: Final answer
    x = 71,855.71

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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.