Home / 86,728.76-130,142.35-34,175.15

Finding the Fourth Proportional to 86,728.76, 130,142.35 and 34,175.15

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Solution

The fourth proportional to 86,728.76, 130,142.35 and 34,175.15 is: 51,282.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,728.76 : 130,142.35 = 34,175.15 : x
  2. Step 2: Convert to fraction form
    86,728.76/130,142.35 = 34,175.15/x
  3. Step 3: Cross multiply
    86,728.76x = 130,142.35 × 34,175.15
  4. Step 4: Simplify right side
    86,728.76x = 4,447,633,511.02
  5. Step 5: Solve for x
    x = 4,447,633,511.02/86,728.76
  6. Step 6: Final answer
    x = 51,282.11

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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.