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Finding the Fourth Proportional to 71,010.12, 97,992.54 and 39,178.92

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Solution

The fourth proportional to 71,010.12, 97,992.54 and 39,178.92 is: 54,066.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,010.12 : 97,992.54 = 39,178.92 : x
  2. Step 2: Convert to fraction form
    71,010.12/97,992.54 = 39,178.92/x
  3. Step 3: Cross multiply
    71,010.12x = 97,992.54 × 39,178.92
  4. Step 4: Simplify right side
    71,010.12x = 3,839,241,885.26
  5. Step 5: Solve for x
    x = 3,839,241,885.26/71,010.12
  6. Step 6: Final answer
    x = 54,066.12

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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.