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Finding the Fourth Proportional to 86,656.20, 130,003.20 and 49,234.20

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Solution

The fourth proportional to 86,656.20, 130,003.20 and 49,234.20 is: 73,862.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,656.20 : 130,003.20 = 49,234.20 : x
  2. Step 2: Convert to fraction form
    86,656.20/130,003.20 = 49,234.20/x
  3. Step 3: Cross multiply
    86,656.20x = 130,003.20 × 49,234.20
  4. Step 4: Simplify right side
    86,656.20x = 6,400,603,549.44
  5. Step 5: Solve for x
    x = 6,400,603,549.44/86,656.20
  6. Step 6: Final answer
    x = 73,862.04

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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.