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Finding the Fourth Proportional to 40,309.88, 60,472.42 and 19,251.50

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Solution

The fourth proportional to 40,309.88, 60,472.42 and 19,251.50 is: 28,880.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,309.88 : 60,472.42 = 19,251.50 : x
  2. Step 2: Convert to fraction form
    40,309.88/60,472.42 = 19,251.50/x
  3. Step 3: Cross multiply
    40,309.88x = 60,472.42 × 19,251.50
  4. Step 4: Simplify right side
    40,309.88x = 1,164,184,443.14
  5. Step 5: Solve for x
    x = 1,164,184,443.14/40,309.88
  6. Step 6: Final answer
    x = 28,880.87

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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.