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Finding the Fourth Proportional to 71,448.89, 98,597.97 and 39,617.51

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Solution

The fourth proportional to 71,448.89, 98,597.97 and 39,617.51 is: 54,671.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,448.89 : 98,597.97 = 39,617.51 : x
  2. Step 2: Convert to fraction form
    71,448.89/98,597.97 = 39,617.51/x
  3. Step 3: Cross multiply
    71,448.89x = 98,597.97 × 39,617.51
  4. Step 4: Simplify right side
    71,448.89x = 3,906,205,569.46
  5. Step 5: Solve for x
    x = 3,906,205,569.46/71,448.89
  6. Step 6: Final answer
    x = 54,671.33

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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.