Home / 86,857.20-130,188.60-49,435.20

Finding the Fourth Proportional to 86,857.20, 130,188.60 and 49,435.20

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Solution

The fourth proportional to 86,857.20, 130,188.60 and 49,435.20 is: 74,097.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,857.20 : 130,188.60 = 49,435.20 : x
  2. Step 2: Convert to fraction form
    86,857.20/130,188.60 = 49,435.20/x
  3. Step 3: Cross multiply
    86,857.20x = 130,188.60 × 49,435.20
  4. Step 4: Simplify right side
    86,857.20x = 6,435,899,478.72
  5. Step 5: Solve for x
    x = 6,435,899,478.72/86,857.20
  6. Step 6: Final answer
    x = 74,097.48

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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.