Home / 79,677.18-119,515.86-20,512.98

Finding the Fourth Proportional to 79,677.18, 119,515.86 and 20,512.98

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Solution

The fourth proportional to 79,677.18, 119,515.86 and 20,512.98 is: 30,769.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,677.18 : 119,515.86 = 20,512.98 : x
  2. Step 2: Convert to fraction form
    79,677.18/119,515.86 = 20,512.98/x
  3. Step 3: Cross multiply
    79,677.18x = 119,515.86 × 20,512.98
  4. Step 4: Simplify right side
    79,677.18x = 2,451,626,445.86
  5. Step 5: Solve for x
    x = 2,451,626,445.86/79,677.18
  6. Step 6: Final answer
    x = 30,769.49

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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.