Home / 83,120.80-124,544.40-47,999.20

Finding the Fourth Proportional to 83,120.80, 124,544.40 and 47,999.20

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Solution

The fourth proportional to 83,120.80, 124,544.40 and 47,999.20 is: 71,919.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,120.80 : 124,544.40 = 47,999.20 : x
  2. Step 2: Convert to fraction form
    83,120.80/124,544.40 = 47,999.20/x
  3. Step 3: Cross multiply
    83,120.80x = 124,544.40 × 47,999.20
  4. Step 4: Simplify right side
    83,120.80x = 5,978,031,564.48
  5. Step 5: Solve for x
    x = 5,978,031,564.48/83,120.80
  6. Step 6: Final answer
    x = 71,919.80

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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.