Home / 56,760.38-78,247.50-39,711.80

Finding the Fourth Proportional to 56,760.38, 78,247.50 and 39,711.80

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Solution

The fourth proportional to 56,760.38, 78,247.50 and 39,711.80 is: 54,745.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,760.38 : 78,247.50 = 39,711.80 : x
  2. Step 2: Convert to fraction form
    56,760.38/78,247.50 = 39,711.80/x
  3. Step 3: Cross multiply
    56,760.38x = 78,247.50 × 39,711.80
  4. Step 4: Simplify right side
    56,760.38x = 3,107,349,070.50
  5. Step 5: Solve for x
    x = 3,107,349,070.50/56,760.38
  6. Step 6: Final answer
    x = 54,745.04

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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.