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Finding the Fourth Proportional to 42,604.60, 63,906.90 and 26,858.20

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Solution

The fourth proportional to 42,604.60, 63,906.90 and 26,858.20 is: 40,287.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,604.60 : 63,906.90 = 26,858.20 : x
  2. Step 2: Convert to fraction form
    42,604.60/63,906.90 = 26,858.20/x
  3. Step 3: Cross multiply
    42,604.60x = 63,906.90 × 26,858.20
  4. Step 4: Simplify right side
    42,604.60x = 1,716,424,301.58
  5. Step 5: Solve for x
    x = 1,716,424,301.58/42,604.60
  6. Step 6: Final answer
    x = 40,287.30

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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.