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Finding the Fourth Proportional to 79,508, 109,721.04 and 45,976.16

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Solution

The fourth proportional to 79,508, 109,721.04 and 45,976.16 is: 63,447.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,508 : 109,721.04 = 45,976.16 : x
  2. Step 2: Convert to fraction form
    79,508/109,721.04 = 45,976.16/x
  3. Step 3: Cross multiply
    79,508x = 109,721.04 × 45,976.16
  4. Step 4: Simplify right side
    79,508x = 5,044,552,090.41
  5. Step 5: Solve for x
    x = 5,044,552,090.41/79,508
  6. Step 6: Final answer
    x = 63,447.10

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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.