Home / 86,434.30-129,621.46-30,273.16

Finding the Fourth Proportional to 86,434.30, 129,621.46 and 30,273.16

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Solution

The fourth proportional to 86,434.30, 129,621.46 and 30,273.16 is: 45,399.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,434.30 : 129,621.46 = 30,273.16 : x
  2. Step 2: Convert to fraction form
    86,434.30/129,621.46 = 30,273.16/x
  3. Step 3: Cross multiply
    86,434.30x = 129,621.46 × 30,273.16
  4. Step 4: Simplify right side
    86,434.30x = 3,924,051,198.01
  5. Step 5: Solve for x
    x = 3,924,051,198.01/86,434.30
  6. Step 6: Final answer
    x = 45,399.24

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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.