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Finding the Fourth Proportional to 78,071.34, 117,125.67 and 25,480.92

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Solution

The fourth proportional to 78,071.34, 117,125.67 and 25,480.92 is: 38,227.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,071.34 : 117,125.67 = 25,480.92 : x
  2. Step 2: Convert to fraction form
    78,071.34/117,125.67 = 25,480.92/x
  3. Step 3: Cross multiply
    78,071.34x = 117,125.67 × 25,480.92
  4. Step 4: Simplify right side
    78,071.34x = 2,984,469,827.22
  5. Step 5: Solve for x
    x = 2,984,469,827.22/78,071.34
  6. Step 6: Final answer
    x = 38,227.47

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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.