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Finding the Fourth Proportional to 80,726.60, 111,262.74 and 76,061

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Solution

The fourth proportional to 80,726.60, 111,262.74 and 76,061 is: 104,832.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,726.60 : 111,262.74 = 76,061 : x
  2. Step 2: Convert to fraction form
    80,726.60/111,262.74 = 76,061/x
  3. Step 3: Cross multiply
    80,726.60x = 111,262.74 × 76,061
  4. Step 4: Simplify right side
    80,726.60x = 8,462,755,267.14
  5. Step 5: Solve for x
    x = 8,462,755,267.14/80,726.60
  6. Step 6: Final answer
    x = 104,832.30

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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.