Home / 78,872.08-108,840.36-43,063.60

Finding the Fourth Proportional to 78,872.08, 108,840.36 and 43,063.60

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Solution

The fourth proportional to 78,872.08, 108,840.36 and 43,063.60 is: 59,426.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,872.08 : 108,840.36 = 43,063.60 : x
  2. Step 2: Convert to fraction form
    78,872.08/108,840.36 = 43,063.60/x
  3. Step 3: Cross multiply
    78,872.08x = 108,840.36 × 43,063.60
  4. Step 4: Simplify right side
    78,872.08x = 4,687,057,726.90
  5. Step 5: Solve for x
    x = 4,687,057,726.90/78,872.08
  6. Step 6: Final answer
    x = 59,426.07

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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.