Home / 86,785.20-130,080.60-49,363.20

Finding the Fourth Proportional to 86,785.20, 130,080.60 and 49,363.20

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Solution

The fourth proportional to 86,785.20, 130,080.60 and 49,363.20 is: 73,989.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,785.20 : 130,080.60 = 49,363.20 : x
  2. Step 2: Convert to fraction form
    86,785.20/130,080.60 = 49,363.20/x
  3. Step 3: Cross multiply
    86,785.20x = 130,080.60 × 49,363.20
  4. Step 4: Simplify right side
    86,785.20x = 6,421,194,673.92
  5. Step 5: Solve for x
    x = 6,421,194,673.92/86,785.20
  6. Step 6: Final answer
    x = 73,989.51

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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.