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Finding the Fourth Proportional to 90,833.91, 136,250.91 and 43,437.80

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Solution

The fourth proportional to 90,833.91, 136,250.91 and 43,437.80 is: 65,156.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,833.91 : 136,250.91 = 43,437.80 : x
  2. Step 2: Convert to fraction form
    90,833.91/136,250.91 = 43,437.80/x
  3. Step 3: Cross multiply
    90,833.91x = 136,250.91 × 43,437.80
  4. Step 4: Simplify right side
    90,833.91x = 5,918,440,119.03
  5. Step 5: Solve for x
    x = 5,918,440,119.03/90,833.91
  6. Step 6: Final answer
    x = 65,156.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.