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Finding the Fourth Proportional to 84,840.78, 127,244.70 and 25,662.60

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Solution

The fourth proportional to 84,840.78, 127,244.70 and 25,662.60 is: 38,488.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,840.78 : 127,244.70 = 25,662.60 : x
  2. Step 2: Convert to fraction form
    84,840.78/127,244.70 = 25,662.60/x
  3. Step 3: Cross multiply
    84,840.78x = 127,244.70 × 25,662.60
  4. Step 4: Simplify right side
    84,840.78x = 3,265,429,838.22
  5. Step 5: Solve for x
    x = 3,265,429,838.22/84,840.78
  6. Step 6: Final answer
    x = 38,488.92

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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.