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Finding the Fourth Proportional to 40,402.48, 60,602.54 and 10,820.31

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Solution

The fourth proportional to 40,402.48, 60,602.54 and 10,820.31 is: 16,230.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,402.48 : 60,602.54 = 10,820.31 : x
  2. Step 2: Convert to fraction form
    40,402.48/60,602.54 = 10,820.31/x
  3. Step 3: Cross multiply
    40,402.48x = 60,602.54 × 10,820.31
  4. Step 4: Simplify right side
    40,402.48x = 655,738,234.75
  5. Step 5: Solve for x
    x = 655,738,234.75/40,402.48
  6. Step 6: Final answer
    x = 16,230.15

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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.