Home / 86,827.20-130,143.60-49,405.20

Finding the Fourth Proportional to 86,827.20, 130,143.60 and 49,405.20

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Solution

The fourth proportional to 86,827.20, 130,143.60 and 49,405.20 is: 74,052.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,827.20 : 130,143.60 = 49,405.20 : x
  2. Step 2: Convert to fraction form
    86,827.20/130,143.60 = 49,405.20/x
  3. Step 3: Cross multiply
    86,827.20x = 130,143.60 × 49,405.20
  4. Step 4: Simplify right side
    86,827.20x = 6,429,770,586.72
  5. Step 5: Solve for x
    x = 6,429,770,586.72/86,827.20
  6. Step 6: Final answer
    x = 74,052.49

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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.