Home / 87,137.55-130,680.15-30,970.28

Finding the Fourth Proportional to 87,137.55, 130,680.15 and 30,970.28

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Solution

The fourth proportional to 87,137.55, 130,680.15 and 30,970.28 is: 46,446.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,137.55 : 130,680.15 = 30,970.28 : x
  2. Step 2: Convert to fraction form
    87,137.55/130,680.15 = 30,970.28/x
  3. Step 3: Cross multiply
    87,137.55x = 130,680.15 × 30,970.28
  4. Step 4: Simplify right side
    87,137.55x = 4,047,200,182.54
  5. Step 5: Solve for x
    x = 4,047,200,182.54/87,137.55
  6. Step 6: Final answer
    x = 46,446.11

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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.