Home / 78,654.31-117,882.91-61,948.33

Finding the Fourth Proportional to 78,654.31, 117,882.91 and 61,948.33

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Solution

The fourth proportional to 78,654.31, 117,882.91 and 61,948.33 is: 92,844.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,654.31 : 117,882.91 = 61,948.33 : x
  2. Step 2: Convert to fraction form
    78,654.31/117,882.91 = 61,948.33/x
  3. Step 3: Cross multiply
    78,654.31x = 117,882.91 × 61,948.33
  4. Step 4: Simplify right side
    78,654.31x = 7,302,649,192.77
  5. Step 5: Solve for x
    x = 7,302,649,192.77/78,654.31
  6. Step 6: Final answer
    x = 92,844.87

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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.