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Finding the Fourth Proportional to 79,765.91, 110,077.70 and 43,957.20

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Solution

The fourth proportional to 79,765.91, 110,077.70 and 43,957.20 is: 60,661.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,765.91 : 110,077.70 = 43,957.20 : x
  2. Step 2: Convert to fraction form
    79,765.91/110,077.70 = 43,957.20/x
  3. Step 3: Cross multiply
    79,765.91x = 110,077.70 × 43,957.20
  4. Step 4: Simplify right side
    79,765.91x = 4,838,707,667.45
  5. Step 5: Solve for x
    x = 4,838,707,667.45/79,765.91
  6. Step 6: Final answer
    x = 60,661.35

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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.