Home / 86,825.20-130,164.90-45,272.20

Finding the Fourth Proportional to 86,825.20, 130,164.90 and 45,272.20

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Solution

The fourth proportional to 86,825.20, 130,164.90 and 45,272.20 is: 67,870.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,825.20 : 130,164.90 = 45,272.20 : x
  2. Step 2: Convert to fraction form
    86,825.20/130,164.90 = 45,272.20/x
  3. Step 3: Cross multiply
    86,825.20x = 130,164.90 × 45,272.20
  4. Step 4: Simplify right side
    86,825.20x = 5,892,851,385.78
  5. Step 5: Solve for x
    x = 5,892,851,385.78/86,825.20
  6. Step 6: Final answer
    x = 67,870.29

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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.