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Finding the Fourth Proportional to 79,494.67, 109,702.65 and 43,687

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Solution

The fourth proportional to 79,494.67, 109,702.65 and 43,687 is: 60,288.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,494.67 : 109,702.65 = 43,687 : x
  2. Step 2: Convert to fraction form
    79,494.67/109,702.65 = 43,687/x
  3. Step 3: Cross multiply
    79,494.67x = 109,702.65 × 43,687
  4. Step 4: Simplify right side
    79,494.67x = 4,792,579,670.55
  5. Step 5: Solve for x
    x = 4,792,579,670.55/79,494.67
  6. Step 6: Final answer
    x = 60,288.06

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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.