Home / 82,778.40-124,155.36-30,175.56

Finding the Fourth Proportional to 82,778.40, 124,155.36 and 30,175.56

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Solution

The fourth proportional to 82,778.40, 124,155.36 and 30,175.56 is: 45,258.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,778.40 : 124,155.36 = 30,175.56 : x
  2. Step 2: Convert to fraction form
    82,778.40/124,155.36 = 30,175.56/x
  3. Step 3: Cross multiply
    82,778.40x = 124,155.36 × 30,175.56
  4. Step 4: Simplify right side
    82,778.40x = 3,746,457,515.00
  5. Step 5: Solve for x
    x = 3,746,457,515.00/82,778.40
  6. Step 6: Final answer
    x = 45,258.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.