Home / 55,140.10-82,710.15-20,080.90

Finding the Fourth Proportional to 55,140.10, 82,710.15 and 20,080.90

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Solution

The fourth proportional to 55,140.10, 82,710.15 and 20,080.90 is: 30,121.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,140.10 : 82,710.15 = 20,080.90 : x
  2. Step 2: Convert to fraction form
    55,140.10/82,710.15 = 20,080.90/x
  3. Step 3: Cross multiply
    55,140.10x = 82,710.15 × 20,080.90
  4. Step 4: Simplify right side
    55,140.10x = 1,660,894,251.14
  5. Step 5: Solve for x
    x = 1,660,894,251.14/55,140.10
  6. Step 6: Final answer
    x = 30,121.35

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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.