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Finding the Fourth Proportional to 79,702.51, 109,990.18 and 43,892.66

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Solution

The fourth proportional to 79,702.51, 109,990.18 and 43,892.66 is: 60,572.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,702.51 : 109,990.18 = 43,892.66 : x
  2. Step 2: Convert to fraction form
    79,702.51/109,990.18 = 43,892.66/x
  3. Step 3: Cross multiply
    79,702.51x = 109,990.18 × 43,892.66
  4. Step 4: Simplify right side
    79,702.51x = 4,827,761,574.08
  5. Step 5: Solve for x
    x = 4,827,761,574.08/79,702.51
  6. Step 6: Final answer
    x = 60,572.27

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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.