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Finding the Fourth Proportional to 73,960.76, 102,065.90 and 40,426.76

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Solution

The fourth proportional to 73,960.76, 102,065.90 and 40,426.76 is: 55,788.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,960.76 : 102,065.90 = 40,426.76 : x
  2. Step 2: Convert to fraction form
    73,960.76/102,065.90 = 40,426.76/x
  3. Step 3: Cross multiply
    73,960.76x = 102,065.90 × 40,426.76
  4. Step 4: Simplify right side
    73,960.76x = 4,126,193,643.48
  5. Step 5: Solve for x
    x = 4,126,193,643.48/73,960.76
  6. Step 6: Final answer
    x = 55,788.96

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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.