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Finding the Fourth Proportional to 79,659.20, 119,344.80 and 38,014.40

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Solution

The fourth proportional to 79,659.20, 119,344.80 and 38,014.40 is: 56,952.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,659.20 : 119,344.80 = 38,014.40 : x
  2. Step 2: Convert to fraction form
    79,659.20/119,344.80 = 38,014.40/x
  3. Step 3: Cross multiply
    79,659.20x = 119,344.80 × 38,014.40
  4. Step 4: Simplify right side
    79,659.20x = 4,536,820,965.12
  5. Step 5: Solve for x
    x = 4,536,820,965.12/79,659.20
  6. Step 6: Final answer
    x = 56,952.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.