Home / 87,036.30-130,688.10-47,670.30

Finding the Fourth Proportional to 87,036.30, 130,688.10 and 47,670.30

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Solution

The fourth proportional to 87,036.30, 130,688.10 and 47,670.30 is: 71,578.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,036.30 : 130,688.10 = 47,670.30 : x
  2. Step 2: Convert to fraction form
    87,036.30/130,688.10 = 47,670.30/x
  3. Step 3: Cross multiply
    87,036.30x = 130,688.10 × 47,670.30
  4. Step 4: Simplify right side
    87,036.30x = 6,229,940,933.43
  5. Step 5: Solve for x
    x = 6,229,940,933.43/87,036.30
  6. Step 6: Final answer
    x = 71,578.65

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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.