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Finding the Fourth Proportional to 84,841.78, 127,246.20 and 25,663.60

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Solution

The fourth proportional to 84,841.78, 127,246.20 and 25,663.60 is: 38,490.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,841.78 : 127,246.20 = 25,663.60 : x
  2. Step 2: Convert to fraction form
    84,841.78/127,246.20 = 25,663.60/x
  3. Step 3: Cross multiply
    84,841.78x = 127,246.20 × 25,663.60
  4. Step 4: Simplify right side
    84,841.78x = 3,265,595,578.32
  5. Step 5: Solve for x
    x = 3,265,595,578.32/84,841.78
  6. Step 6: Final answer
    x = 38,490.42

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1.5x scale

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.