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Finding the Fourth Proportional to 71,009.08, 97,992.52 and 39,178.04

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Solution

The fourth proportional to 71,009.08, 97,992.52 and 39,178.04 is: 54,065.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,009.08 : 97,992.52 = 39,178.04 : x
  2. Step 2: Convert to fraction form
    71,009.08/97,992.52 = 39,178.04/x
  3. Step 3: Cross multiply
    71,009.08x = 97,992.52 × 39,178.04
  4. Step 4: Simplify right side
    71,009.08x = 3,839,154,868.26
  5. Step 5: Solve for x
    x = 3,839,154,868.26/71,009.08
  6. Step 6: Final answer
    x = 54,065.69

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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.