Home / 72,721.45-100,306.26-47,182.18

Finding the Fourth Proportional to 72,721.45, 100,306.26 and 47,182.18

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Solution

The fourth proportional to 72,721.45, 100,306.26 and 47,182.18 is: 65,079.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,721.45 : 100,306.26 = 47,182.18 : x
  2. Step 2: Convert to fraction form
    72,721.45/100,306.26 = 47,182.18/x
  3. Step 3: Cross multiply
    72,721.45x = 100,306.26 × 47,182.18
  4. Step 4: Simplify right side
    72,721.45x = 4,732,668,441.27
  5. Step 5: Solve for x
    x = 4,732,668,441.27/72,721.45
  6. Step 6: Final answer
    x = 65,079.41

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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.