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Finding the Fourth Proportional to 85,275.98, 127,940.62 and 29,117.42

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Solution

The fourth proportional to 85,275.98, 127,940.62 and 29,117.42 is: 43,685.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,275.98 : 127,940.62 = 29,117.42 : x
  2. Step 2: Convert to fraction form
    85,275.98/127,940.62 = 29,117.42/x
  3. Step 3: Cross multiply
    85,275.98x = 127,940.62 × 29,117.42
  4. Step 4: Simplify right side
    85,275.98x = 3,725,300,767.60
  5. Step 5: Solve for x
    x = 3,725,300,767.60/85,275.98
  6. Step 6: Final answer
    x = 43,685.23

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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.