Home / 65,740.10-98,610.15-18,997.70

Finding the Fourth Proportional to 65,740.10, 98,610.15 and 18,997.70

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Solution

The fourth proportional to 65,740.10, 98,610.15 and 18,997.70 is: 28,496.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,740.10 : 98,610.15 = 18,997.70 : x
  2. Step 2: Convert to fraction form
    65,740.10/98,610.15 = 18,997.70/x
  3. Step 3: Cross multiply
    65,740.10x = 98,610.15 × 18,997.70
  4. Step 4: Simplify right side
    65,740.10x = 1,873,366,046.66
  5. Step 5: Solve for x
    x = 1,873,366,046.66/65,740.10
  6. Step 6: Final answer
    x = 28,496.55

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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.