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Finding the Fourth Proportional to 84,838.30, 127,257.45 and 77,062.30

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Solution

The fourth proportional to 84,838.30, 127,257.45 and 77,062.30 is: 115,593.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,838.30 : 127,257.45 = 77,062.30 : x
  2. Step 2: Convert to fraction form
    84,838.30/127,257.45 = 77,062.30/x
  3. Step 3: Cross multiply
    84,838.30x = 127,257.45 × 77,062.30
  4. Step 4: Simplify right side
    84,838.30x = 9,806,751,789.14
  5. Step 5: Solve for x
    x = 9,806,751,789.14/84,838.30
  6. Step 6: Final answer
    x = 115,593.45

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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.