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Finding the Fourth Proportional to 71,708.67, 98,960.34 and 39,444.63

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Solution

The fourth proportional to 71,708.67, 98,960.34 and 39,444.63 is: 54,434.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,708.67 : 98,960.34 = 39,444.63 : x
  2. Step 2: Convert to fraction form
    71,708.67/98,960.34 = 39,444.63/x
  3. Step 3: Cross multiply
    71,708.67x = 98,960.34 × 39,444.63
  4. Step 4: Simplify right side
    71,708.67x = 3,903,453,995.97
  5. Step 5: Solve for x
    x = 3,903,453,995.97/71,708.67
  6. Step 6: Final answer
    x = 54,434.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.