Home / 80,939.60-121,409.12-37,658.24

Finding the Fourth Proportional to 80,939.60, 121,409.12 and 37,658.24

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Solution

The fourth proportional to 80,939.60, 121,409.12 and 37,658.24 is: 56,487.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,939.60 : 121,409.12 = 37,658.24 : x
  2. Step 2: Convert to fraction form
    80,939.60/121,409.12 = 37,658.24/x
  3. Step 3: Cross multiply
    80,939.60x = 121,409.12 × 37,658.24
  4. Step 4: Simplify right side
    80,939.60x = 4,572,053,779.15
  5. Step 5: Solve for x
    x = 4,572,053,779.15/80,939.60
  6. Step 6: Final answer
    x = 56,487.23

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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.