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Finding the Fourth Proportional to 71,450.79, 98,602.97 and 39,620.22

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Solution

The fourth proportional to 71,450.79, 98,602.97 and 39,620.22 is: 54,676.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,450.79 : 98,602.97 = 39,620.22 : x
  2. Step 2: Convert to fraction form
    71,450.79/98,602.97 = 39,620.22/x
  3. Step 3: Cross multiply
    71,450.79x = 98,602.97 × 39,620.22
  4. Step 4: Simplify right side
    71,450.79x = 3,906,671,165.95
  5. Step 5: Solve for x
    x = 3,906,671,165.95/71,450.79
  6. Step 6: Final answer
    x = 54,676.39

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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.