Home / 86,772.68-130,175.30-39,391.12

Finding the Fourth Proportional to 86,772.68, 130,175.30 and 39,391.12

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Solution

The fourth proportional to 86,772.68, 130,175.30 and 39,391.12 is: 59,094.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,772.68 : 130,175.30 = 39,391.12 : x
  2. Step 2: Convert to fraction form
    86,772.68/130,175.30 = 39,391.12/x
  3. Step 3: Cross multiply
    86,772.68x = 130,175.30 × 39,391.12
  4. Step 4: Simplify right side
    86,772.68x = 5,127,750,452.67
  5. Step 5: Solve for x
    x = 5,127,750,452.67/86,772.68
  6. Step 6: Final answer
    x = 59,094.06

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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.