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Finding the Fourth Proportional to 79,139.96, 109,213.16 and 43,332.28

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Solution

The fourth proportional to 79,139.96, 109,213.16 and 43,332.28 is: 59,798.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,139.96 : 109,213.16 = 43,332.28 : x
  2. Step 2: Convert to fraction form
    79,139.96/109,213.16 = 43,332.28/x
  3. Step 3: Cross multiply
    79,139.96x = 109,213.16 × 43,332.28
  4. Step 4: Simplify right side
    79,139.96x = 4,732,455,228.80
  5. Step 5: Solve for x
    x = 4,732,455,228.80/79,139.96
  6. Step 6: Final answer
    x = 59,798.55

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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.