Home / 86,915.97-130,432.39-30,755.86

Finding the Fourth Proportional to 86,915.97, 130,432.39 and 30,755.86

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Solution

The fourth proportional to 86,915.97, 130,432.39 and 30,755.86 is: 46,154.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,915.97 : 130,432.39 = 30,755.86 : x
  2. Step 2: Convert to fraction form
    86,915.97/130,432.39 = 30,755.86/x
  3. Step 3: Cross multiply
    86,915.97x = 130,432.39 × 30,755.86
  4. Step 4: Simplify right side
    86,915.97x = 4,011,560,326.31
  5. Step 5: Solve for x
    x = 4,011,560,326.31/86,915.97
  6. Step 6: Final answer
    x = 46,154.47

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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.