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Finding the Fourth Proportional to 71,937.99, 99,275.67 and 40,103.37

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Solution

The fourth proportional to 71,937.99, 99,275.67 and 40,103.37 is: 55,343.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,937.99 : 99,275.67 = 40,103.37 : x
  2. Step 2: Convert to fraction form
    71,937.99/99,275.67 = 40,103.37/x
  3. Step 3: Cross multiply
    71,937.99x = 99,275.67 × 40,103.37
  4. Step 4: Simplify right side
    71,937.99x = 3,981,288,926.01
  5. Step 5: Solve for x
    x = 3,981,288,926.01/71,937.99
  6. Step 6: Final answer
    x = 55,343.34

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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.