Home / 78,786.90-108,750.18-48,581.70

Finding the Fourth Proportional to 78,786.90, 108,750.18 and 48,581.70

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Solution

The fourth proportional to 78,786.90, 108,750.18 and 48,581.70 is: 67,057.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,786.90 : 108,750.18 = 48,581.70 : x
  2. Step 2: Convert to fraction form
    78,786.90/108,750.18 = 48,581.70/x
  3. Step 3: Cross multiply
    78,786.90x = 108,750.18 × 48,581.70
  4. Step 4: Simplify right side
    78,786.90x = 5,283,268,619.71
  5. Step 5: Solve for x
    x = 5,283,268,619.71/78,786.90
  6. Step 6: Final answer
    x = 67,057.70

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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.