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Finding the Fourth Proportional to 79,691.73, 109,971.04 and 45,675.83

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Solution

The fourth proportional to 79,691.73, 109,971.04 and 45,675.83 is: 63,030.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,691.73 : 109,971.04 = 45,675.83 : x
  2. Step 2: Convert to fraction form
    79,691.73/109,971.04 = 45,675.83/x
  3. Step 3: Cross multiply
    79,691.73x = 109,971.04 × 45,675.83
  4. Step 4: Simplify right side
    79,691.73x = 5,023,018,902.81
  5. Step 5: Solve for x
    x = 5,023,018,902.81/79,691.73
  6. Step 6: Final answer
    x = 63,030.62

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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.