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Finding the Fourth Proportional to 79,495.38, 109,703.52 and 43,687.65

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Solution

The fourth proportional to 79,495.38, 109,703.52 and 43,687.65 is: 60,288.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,495.38 : 109,703.52 = 43,687.65 : x
  2. Step 2: Convert to fraction form
    79,495.38/109,703.52 = 43,687.65/x
  3. Step 3: Cross multiply
    79,495.38x = 109,703.52 × 43,687.65
  4. Step 4: Simplify right side
    79,495.38x = 4,792,688,985.53
  5. Step 5: Solve for x
    x = 4,792,688,985.53/79,495.38
  6. Step 6: Final answer
    x = 60,288.90

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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.