Home / 62,990.40-86,896.13-40,311.21

Finding the Fourth Proportional to 62,990.40, 86,896.13 and 40,311.21

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Solution

The fourth proportional to 62,990.40, 86,896.13 and 40,311.21 is: 55,609.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,990.40 : 86,896.13 = 40,311.21 : x
  2. Step 2: Convert to fraction form
    62,990.40/86,896.13 = 40,311.21/x
  3. Step 3: Cross multiply
    62,990.40x = 86,896.13 × 40,311.21
  4. Step 4: Simplify right side
    62,990.40x = 3,502,888,144.62
  5. Step 5: Solve for x
    x = 3,502,888,144.62/62,990.40
  6. Step 6: Final answer
    x = 55,609.87

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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.