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Finding the Fourth Proportional to 71,431.93, 107,146.79 and 17,397.11

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Solution

The fourth proportional to 71,431.93, 107,146.79 and 17,397.11 is: 26,095.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,431.93 : 107,146.79 = 17,397.11 : x
  2. Step 2: Convert to fraction form
    71,431.93/107,146.79 = 17,397.11/x
  3. Step 3: Cross multiply
    71,431.93x = 107,146.79 × 17,397.11
  4. Step 4: Simplify right side
    71,431.93x = 1,864,044,672.66
  5. Step 5: Solve for x
    x = 1,864,044,672.66/71,431.93
  6. Step 6: Final answer
    x = 26,095.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.