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Finding the Fourth Proportional to 79,560.57, 119,331.95 and 20,397.63

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Solution

The fourth proportional to 79,560.57, 119,331.95 and 20,397.63 is: 30,594.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,560.57 : 119,331.95 = 20,397.63 : x
  2. Step 2: Convert to fraction form
    79,560.57/119,331.95 = 20,397.63/x
  3. Step 3: Cross multiply
    79,560.57x = 119,331.95 × 20,397.63
  4. Step 4: Simplify right side
    79,560.57x = 2,434,088,861.29
  5. Step 5: Solve for x
    x = 2,434,088,861.29/79,560.57
  6. Step 6: Final answer
    x = 30,594.16

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1.5x scale

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.