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Finding the Fourth Proportional to 40,235.40, 60,401.70 and 39,943.80

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Solution

The fourth proportional to 40,235.40, 60,401.70 and 39,943.80 is: 59,963.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,235.40 : 60,401.70 = 39,943.80 : x
  2. Step 2: Convert to fraction form
    40,235.40/60,401.70 = 39,943.80/x
  3. Step 3: Cross multiply
    40,235.40x = 60,401.70 × 39,943.80
  4. Step 4: Simplify right side
    40,235.40x = 2,412,673,424.46
  5. Step 5: Solve for x
    x = 2,412,673,424.46/40,235.40
  6. Step 6: Final answer
    x = 59,963.95

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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.