Home / 78,049.86-117,089.40-25,474.38

Finding the Fourth Proportional to 78,049.86, 117,089.40 and 25,474.38

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Solution

The fourth proportional to 78,049.86, 117,089.40 and 25,474.38 is: 38,216.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,049.86 : 117,089.40 = 25,474.38 : x
  2. Step 2: Convert to fraction form
    78,049.86/117,089.40 = 25,474.38/x
  3. Step 3: Cross multiply
    78,049.86x = 117,089.40 × 25,474.38
  4. Step 4: Simplify right side
    78,049.86x = 2,982,779,869.57
  5. Step 5: Solve for x
    x = 2,982,779,869.57/78,049.86
  6. Step 6: Final answer
    x = 38,216.34

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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.