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Finding the Fourth Proportional to 42,645.60, 63,944.40 and 16,351.20

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Solution

The fourth proportional to 42,645.60, 63,944.40 and 16,351.20 is: 24,517.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,645.60 : 63,944.40 = 16,351.20 : x
  2. Step 2: Convert to fraction form
    42,645.60/63,944.40 = 16,351.20/x
  3. Step 3: Cross multiply
    42,645.60x = 63,944.40 × 16,351.20
  4. Step 4: Simplify right side
    42,645.60x = 1,045,567,673.28
  5. Step 5: Solve for x
    x = 1,045,567,673.28/42,645.60
  6. Step 6: Final answer
    x = 24,517.60

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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.