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Finding the Fourth Proportional to 84,709.39, 126,981.47 and 40,324.23

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Solution

The fourth proportional to 84,709.39, 126,981.47 and 40,324.23 is: 60,447.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,709.39 : 126,981.47 = 40,324.23 : x
  2. Step 2: Convert to fraction form
    84,709.39/126,981.47 = 40,324.23/x
  3. Step 3: Cross multiply
    84,709.39x = 126,981.47 × 40,324.23
  4. Step 4: Simplify right side
    84,709.39x = 5,120,429,165.49
  5. Step 5: Solve for x
    x = 5,120,429,165.49/84,709.39
  6. Step 6: Final answer
    x = 60,447.01

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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.