Home / 80,816.65-111,418.27-56,585.02

Finding the Fourth Proportional to 80,816.65, 111,418.27 and 56,585.02

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Solution

The fourth proportional to 80,816.65, 111,418.27 and 56,585.02 is: 78,011.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,816.65 : 111,418.27 = 56,585.02 : x
  2. Step 2: Convert to fraction form
    80,816.65/111,418.27 = 56,585.02/x
  3. Step 3: Cross multiply
    80,816.65x = 111,418.27 × 56,585.02
  4. Step 4: Simplify right side
    80,816.65x = 6,304,604,616.31
  5. Step 5: Solve for x
    x = 6,304,604,616.31/80,816.65
  6. Step 6: Final answer
    x = 78,011.21

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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.