Home / 40,220.80-60,331.20-27,779.20

Finding the Fourth Proportional to 40,220.80, 60,331.20 and 27,779.20

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Solution

The fourth proportional to 40,220.80, 60,331.20 and 27,779.20 is: 41,668.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,220.80 : 60,331.20 = 27,779.20 : x
  2. Step 2: Convert to fraction form
    40,220.80/60,331.20 = 27,779.20/x
  3. Step 3: Cross multiply
    40,220.80x = 60,331.20 × 27,779.20
  4. Step 4: Simplify right side
    40,220.80x = 1,675,952,471.04
  5. Step 5: Solve for x
    x = 1,675,952,471.04/40,220.80
  6. Step 6: Final answer
    x = 41,668.80

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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.