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Finding the Fourth Proportional to 90,165.63, 124,437.87 and 51,926.43

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Solution

The fourth proportional to 90,165.63, 124,437.87 and 51,926.43 is: 71,663.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,165.63 : 124,437.87 = 51,926.43 : x
  2. Step 2: Convert to fraction form
    90,165.63/124,437.87 = 51,926.43/x
  3. Step 3: Cross multiply
    90,165.63x = 124,437.87 × 51,926.43
  4. Step 4: Simplify right side
    90,165.63x = 6,461,614,345.90
  5. Step 5: Solve for x
    x = 6,461,614,345.90/90,165.63
  6. Step 6: Final answer
    x = 71,663.83

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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.