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Finding the Fourth Proportional to 40,663.80, 60,995.70 and 14,371.20

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Solution

The fourth proportional to 40,663.80, 60,995.70 and 14,371.20 is: 21,556.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,663.80 : 60,995.70 = 14,371.20 : x
  2. Step 2: Convert to fraction form
    40,663.80/60,995.70 = 14,371.20/x
  3. Step 3: Cross multiply
    40,663.80x = 60,995.70 × 14,371.20
  4. Step 4: Simplify right side
    40,663.80x = 876,581,403.84
  5. Step 5: Solve for x
    x = 876,581,403.84/40,663.80
  6. Step 6: Final answer
    x = 21,556.80

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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.