Home / 81,532.28-112,515.69-49,262.40

Finding the Fourth Proportional to 81,532.28, 112,515.69 and 49,262.40

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Solution

The fourth proportional to 81,532.28, 112,515.69 and 49,262.40 is: 67,982.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,532.28 : 112,515.69 = 49,262.40 : x
  2. Step 2: Convert to fraction form
    81,532.28/112,515.69 = 49,262.40/x
  3. Step 3: Cross multiply
    81,532.28x = 112,515.69 × 49,262.40
  4. Step 4: Simplify right side
    81,532.28x = 5,542,793,111.79
  5. Step 5: Solve for x
    x = 5,542,793,111.79/81,532.28
  6. Step 6: Final answer
    x = 67,982.80

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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.