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Finding the Fourth Proportional to 84,838.70, 127,225.65 and 25,654.70

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Solution

The fourth proportional to 84,838.70, 127,225.65 and 25,654.70 is: 38,472.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,838.70 : 127,225.65 = 25,654.70 : x
  2. Step 2: Convert to fraction form
    84,838.70/127,225.65 = 25,654.70/x
  3. Step 3: Cross multiply
    84,838.70x = 127,225.65 × 25,654.70
  4. Step 4: Simplify right side
    84,838.70x = 3,263,935,883.06
  5. Step 5: Solve for x
    x = 3,263,935,883.06/84,838.70
  6. Step 6: Final answer
    x = 38,472.25

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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.