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Finding the Fourth Proportional to 84,882.78, 127,345.82 and 39,895.43

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Solution

The fourth proportional to 84,882.78, 127,345.82 and 39,895.43 is: 59,853.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,882.78 : 127,345.82 = 39,895.43 : x
  2. Step 2: Convert to fraction form
    84,882.78/127,345.82 = 39,895.43/x
  3. Step 3: Cross multiply
    84,882.78x = 127,345.82 × 39,895.43
  4. Step 4: Simplify right side
    84,882.78x = 5,080,515,411.40
  5. Step 5: Solve for x
    x = 5,080,515,411.40/84,882.78
  6. Step 6: Final answer
    x = 59,853.31

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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.