Home / 78,585.24-108,450-48,387.99

Finding the Fourth Proportional to 78,585.24, 108,450 and 48,387.99

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Solution

The fourth proportional to 78,585.24, 108,450 and 48,387.99 is: 66,776.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,585.24 : 108,450 = 48,387.99 : x
  2. Step 2: Convert to fraction form
    78,585.24/108,450 = 48,387.99/x
  3. Step 3: Cross multiply
    78,585.24x = 108,450 × 48,387.99
  4. Step 4: Simplify right side
    78,585.24x = 5,247,677,515.50
  5. Step 5: Solve for x
    x = 5,247,677,515.50/78,585.24
  6. Step 6: Final answer
    x = 66,776.88

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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.