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Finding the Fourth Proportional to 71,673.17, 98,900.33 and 39,402.45

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Solution

The fourth proportional to 71,673.17, 98,900.33 and 39,402.45 is: 54,370.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,673.17 : 98,900.33 = 39,402.45 : x
  2. Step 2: Convert to fraction form
    71,673.17/98,900.33 = 39,402.45/x
  3. Step 3: Cross multiply
    71,673.17x = 98,900.33 × 39,402.45
  4. Step 4: Simplify right side
    71,673.17x = 3,896,915,110.80
  5. Step 5: Solve for x
    x = 3,896,915,110.80/71,673.17
  6. Step 6: Final answer
    x = 54,370.63

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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.