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Finding the Fourth Proportional to 79,306.02, 109,463.13 and 47,499.78

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Solution

The fourth proportional to 79,306.02, 109,463.13 and 47,499.78 is: 65,562.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,306.02 : 109,463.13 = 47,499.78 : x
  2. Step 2: Convert to fraction form
    79,306.02/109,463.13 = 47,499.78/x
  3. Step 3: Cross multiply
    79,306.02x = 109,463.13 × 47,499.78
  4. Step 4: Simplify right side
    79,306.02x = 5,199,474,593.11
  5. Step 5: Solve for x
    x = 5,199,474,593.11/79,306.02
  6. Step 6: Final answer
    x = 65,562.17

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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.