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Finding the Fourth Proportional to 71,369.80, 107,022.30 and 26,981.80

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Solution

The fourth proportional to 71,369.80, 107,022.30 and 26,981.80 is: 40,460.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,369.80 : 107,022.30 = 26,981.80 : x
  2. Step 2: Convert to fraction form
    71,369.80/107,022.30 = 26,981.80/x
  3. Step 3: Cross multiply
    71,369.80x = 107,022.30 × 26,981.80
  4. Step 4: Simplify right side
    71,369.80x = 2,887,654,294.14
  5. Step 5: Solve for x
    x = 2,887,654,294.14/71,369.80
  6. Step 6: Final answer
    x = 40,460.45

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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.