Home / 78,355.74-117,541.82-25,769.33

Finding the Fourth Proportional to 78,355.74, 117,541.82 and 25,769.33

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Solution

The fourth proportional to 78,355.74, 117,541.82 and 25,769.33 is: 38,656.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,355.74 : 117,541.82 = 25,769.33 : x
  2. Step 2: Convert to fraction form
    78,355.74/117,541.82 = 25,769.33/x
  3. Step 3: Cross multiply
    78,355.74x = 117,541.82 × 25,769.33
  4. Step 4: Simplify right side
    78,355.74x = 3,028,973,948.38
  5. Step 5: Solve for x
    x = 3,028,973,948.38/78,355.74
  6. Step 6: Final answer
    x = 38,656.70

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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.