Home / 80,818.65-111,521.75-45,012

Finding the Fourth Proportional to 80,818.65, 111,521.75 and 45,012

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Solution

The fourth proportional to 80,818.65, 111,521.75 and 45,012 is: 62,112.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,818.65 : 111,521.75 = 45,012 : x
  2. Step 2: Convert to fraction form
    80,818.65/111,521.75 = 45,012/x
  3. Step 3: Cross multiply
    80,818.65x = 111,521.75 × 45,012
  4. Step 4: Simplify right side
    80,818.65x = 5,019,817,011
  5. Step 5: Solve for x
    x = 5,019,817,011/80,818.65
  6. Step 6: Final answer
    x = 62,112.11

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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.