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Finding the Fourth Proportional to 84,760.76, 127,141.78 and 39,164.24

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Solution

The fourth proportional to 84,760.76, 127,141.78 and 39,164.24 is: 58,746.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,760.76 : 127,141.78 = 39,164.24 : x
  2. Step 2: Convert to fraction form
    84,760.76/127,141.78 = 39,164.24/x
  3. Step 3: Cross multiply
    84,760.76x = 127,141.78 × 39,164.24
  4. Step 4: Simplify right side
    84,760.76x = 4,979,411,185.95
  5. Step 5: Solve for x
    x = 4,979,411,185.95/84,760.76
  6. Step 6: Final answer
    x = 58,746.66

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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.