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Finding the Fourth Proportional to 86,844.20, 130,169.10 and 49,422.20

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Solution

The fourth proportional to 86,844.20, 130,169.10 and 49,422.20 is: 74,077.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,844.20 : 130,169.10 = 49,422.20 : x
  2. Step 2: Convert to fraction form
    86,844.20/130,169.10 = 49,422.20/x
  3. Step 3: Cross multiply
    86,844.20x = 130,169.10 × 49,422.20
  4. Step 4: Simplify right side
    86,844.20x = 6,433,243,294.02
  5. Step 5: Solve for x
    x = 6,433,243,294.02/86,844.20
  6. Step 6: Final answer
    x = 74,077.98

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1.5x scale

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.