Home / 80,821.66-111,525.88-45,015

Finding the Fourth Proportional to 80,821.66, 111,525.88 and 45,015

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Solution

The fourth proportional to 80,821.66, 111,525.88 and 45,015 is: 62,116.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,821.66 : 111,525.88 = 45,015 : x
  2. Step 2: Convert to fraction form
    80,821.66/111,525.88 = 45,015/x
  3. Step 3: Cross multiply
    80,821.66x = 111,525.88 × 45,015
  4. Step 4: Simplify right side
    80,821.66x = 5,020,337,488.20
  5. Step 5: Solve for x
    x = 5,020,337,488.20/80,821.66
  6. Step 6: Final answer
    x = 62,116.24

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1.5x scale

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.