Home / 86,864.20-130,199.10-49,442.20

Finding the Fourth Proportional to 86,864.20, 130,199.10 and 49,442.20

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Solution

The fourth proportional to 86,864.20, 130,199.10 and 49,442.20 is: 74,107.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,864.20 : 130,199.10 = 49,442.20 : x
  2. Step 2: Convert to fraction form
    86,864.20/130,199.10 = 49,442.20/x
  3. Step 3: Cross multiply
    86,864.20x = 130,199.10 × 49,442.20
  4. Step 4: Simplify right side
    86,864.20x = 6,437,329,942.02
  5. Step 5: Solve for x
    x = 6,437,329,942.02/86,864.20
  6. Step 6: Final answer
    x = 74,107.97

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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.