Home / 78,724.72-108,670.44-57,671.20

Finding the Fourth Proportional to 78,724.72, 108,670.44 and 57,671.20

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Solution

The fourth proportional to 78,724.72, 108,670.44 and 57,671.20 is: 79,608.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,724.72 : 108,670.44 = 57,671.20 : x
  2. Step 2: Convert to fraction form
    78,724.72/108,670.44 = 57,671.20/x
  3. Step 3: Cross multiply
    78,724.72x = 108,670.44 × 57,671.20
  4. Step 4: Simplify right side
    78,724.72x = 6,267,154,679.33
  5. Step 5: Solve for x
    x = 6,267,154,679.33/78,724.72
  6. Step 6: Final answer
    x = 79,608.47

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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.