Home / 80,971.61-111,740.99-45,160.70

Finding the Fourth Proportional to 80,971.61, 111,740.99 and 45,160.70

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Solution

The fourth proportional to 80,971.61, 111,740.99 and 45,160.70 is: 62,321.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,971.61 : 111,740.99 = 45,160.70 : x
  2. Step 2: Convert to fraction form
    80,971.61/111,740.99 = 45,160.70/x
  3. Step 3: Cross multiply
    80,971.61x = 111,740.99 × 45,160.70
  4. Step 4: Simplify right side
    80,971.61x = 5,046,300,542.58
  5. Step 5: Solve for x
    x = 5,046,300,542.58/80,971.61
  6. Step 6: Final answer
    x = 62,321.85

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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.