Home / 82,720.20-124,080.30-64,057.80

Finding the Fourth Proportional to 82,720.20, 124,080.30 and 64,057.80

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Solution

The fourth proportional to 82,720.20, 124,080.30 and 64,057.80 is: 96,086.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,720.20 : 124,080.30 = 64,057.80 : x
  2. Step 2: Convert to fraction form
    82,720.20/124,080.30 = 64,057.80/x
  3. Step 3: Cross multiply
    82,720.20x = 124,080.30 × 64,057.80
  4. Step 4: Simplify right side
    82,720.20x = 7,948,311,041.34
  5. Step 5: Solve for x
    x = 7,948,311,041.34/82,720.20
  6. Step 6: Final answer
    x = 96,086.70

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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.