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Finding the Fourth Proportional to 71,648.88, 98,873.04 and 39,383.64

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Solution

The fourth proportional to 71,648.88, 98,873.04 and 39,383.64 is: 54,348.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,648.88 : 98,873.04 = 39,383.64 : x
  2. Step 2: Convert to fraction form
    71,648.88/98,873.04 = 39,383.64/x
  3. Step 3: Cross multiply
    71,648.88x = 98,873.04 × 39,383.64
  4. Step 4: Simplify right side
    71,648.88x = 3,893,980,213.07
  5. Step 5: Solve for x
    x = 3,893,980,213.07/71,648.88
  6. Step 6: Final answer
    x = 54,348.10

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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.