Home / 87,547.65-120,816.26-49,821.90

Finding the Fourth Proportional to 87,547.65, 120,816.26 and 49,821.90

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Solution

The fourth proportional to 87,547.65, 120,816.26 and 49,821.90 is: 68,754.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,547.65 : 120,816.26 = 49,821.90 : x
  2. Step 2: Convert to fraction form
    87,547.65/120,816.26 = 49,821.90/x
  3. Step 3: Cross multiply
    87,547.65x = 120,816.26 × 49,821.90
  4. Step 4: Simplify right side
    87,547.65x = 6,019,295,374.98
  5. Step 5: Solve for x
    x = 6,019,295,374.98/87,547.65
  6. Step 6: Final answer
    x = 68,754.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.