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Finding the Fourth Proportional to 84,838.60, 127,241.70 and 25,676.20

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Solution

The fourth proportional to 84,838.60, 127,241.70 and 25,676.20 is: 38,509.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,838.60 : 127,241.70 = 25,676.20 : x
  2. Step 2: Convert to fraction form
    84,838.60/127,241.70 = 25,676.20/x
  3. Step 3: Cross multiply
    84,838.60x = 127,241.70 × 25,676.20
  4. Step 4: Simplify right side
    84,838.60x = 3,267,083,337.54
  5. Step 5: Solve for x
    x = 3,267,083,337.54/84,838.60
  6. Step 6: Final answer
    x = 38,509.40

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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.