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Finding the Fourth Proportional to 79,423.70, 109,605.65 and 43,612.97

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Solution

The fourth proportional to 79,423.70, 109,605.65 and 43,612.97 is: 60,186.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,423.70 : 109,605.65 = 43,612.97 : x
  2. Step 2: Convert to fraction form
    79,423.70/109,605.65 = 43,612.97/x
  3. Step 3: Cross multiply
    79,423.70x = 109,605.65 × 43,612.97
  4. Step 4: Simplify right side
    79,423.70x = 4,780,227,159.19
  5. Step 5: Solve for x
    x = 4,780,227,159.19/79,423.70
  6. Step 6: Final answer
    x = 60,186.41

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1.5x scale

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.