Home / 63,489.55-87,585.38-37,990.78

Finding the Fourth Proportional to 63,489.55, 87,585.38 and 37,990.78

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Solution

The fourth proportional to 63,489.55, 87,585.38 and 37,990.78 is: 52,409.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,489.55 : 87,585.38 = 37,990.78 : x
  2. Step 2: Convert to fraction form
    63,489.55/87,585.38 = 37,990.78/x
  3. Step 3: Cross multiply
    63,489.55x = 87,585.38 × 37,990.78
  4. Step 4: Simplify right side
    63,489.55x = 3,327,436,778.81
  5. Step 5: Solve for x
    x = 3,327,436,778.81/63,489.55
  6. Step 6: Final answer
    x = 52,409.21

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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.