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Finding the Fourth Proportional to 43,147.95, 64,712.17 and 16,839.15

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Solution

The fourth proportional to 43,147.95, 64,712.17 and 16,839.15 is: 25,254.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,147.95 : 64,712.17 = 16,839.15 : x
  2. Step 2: Convert to fraction form
    43,147.95/64,712.17 = 16,839.15/x
  3. Step 3: Cross multiply
    43,147.95x = 64,712.17 × 16,839.15
  4. Step 4: Simplify right side
    43,147.95x = 1,089,697,937.46
  5. Step 5: Solve for x
    x = 1,089,697,937.46/43,147.95
  6. Step 6: Final answer
    x = 25,254.92

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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.