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Finding the Fourth Proportional to 71,448.54, 98,602.14 and 39,615.42

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Solution

The fourth proportional to 71,448.54, 98,602.14 and 39,615.42 is: 54,671.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,448.54 : 98,602.14 = 39,615.42 : x
  2. Step 2: Convert to fraction form
    71,448.54/98,602.14 = 39,615.42/x
  3. Step 3: Cross multiply
    71,448.54x = 98,602.14 × 39,615.42
  4. Step 4: Simplify right side
    71,448.54x = 3,906,165,189.00
  5. Step 5: Solve for x
    x = 3,906,165,189.00/71,448.54
  6. Step 6: Final answer
    x = 54,671.03

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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.