Home / 84,942.78-127,407.66-25,778.76

Finding the Fourth Proportional to 84,942.78, 127,407.66 and 25,778.76

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Solution

The fourth proportional to 84,942.78, 127,407.66 and 25,778.76 is: 38,666.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,942.78 : 127,407.66 = 25,778.76 : x
  2. Step 2: Convert to fraction form
    84,942.78/127,407.66 = 25,778.76/x
  3. Step 3: Cross multiply
    84,942.78x = 127,407.66 × 25,778.76
  4. Step 4: Simplify right side
    84,942.78x = 3,284,411,489.30
  5. Step 5: Solve for x
    x = 3,284,411,489.30/84,942.78
  6. Step 6: Final answer
    x = 38,666.16

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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.