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Finding the Fourth Proportional to 79,179.98, 109,262.45 and 45,187.52

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Solution

The fourth proportional to 79,179.98, 109,262.45 and 45,187.52 is: 62,355.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,179.98 : 109,262.45 = 45,187.52 : x
  2. Step 2: Convert to fraction form
    79,179.98/109,262.45 = 45,187.52/x
  3. Step 3: Cross multiply
    79,179.98x = 109,262.45 × 45,187.52
  4. Step 4: Simplify right side
    79,179.98x = 4,937,298,711.28
  5. Step 5: Solve for x
    x = 4,937,298,711.28/79,179.98
  6. Step 6: Final answer
    x = 62,355.40

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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.