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Finding the Fourth Proportional to 42,441.80, 63,662.70 and 10,851.80

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Solution

The fourth proportional to 42,441.80, 63,662.70 and 10,851.80 is: 16,277.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,441.80 : 63,662.70 = 10,851.80 : x
  2. Step 2: Convert to fraction form
    42,441.80/63,662.70 = 10,851.80/x
  3. Step 3: Cross multiply
    42,441.80x = 63,662.70 × 10,851.80
  4. Step 4: Simplify right side
    42,441.80x = 690,854,887.86
  5. Step 5: Solve for x
    x = 690,854,887.86/42,441.80
  6. Step 6: Final answer
    x = 16,277.70

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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.