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Finding the Fourth Proportional to 70,191.47, 105,287.12 and 16,883.42

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Solution

The fourth proportional to 70,191.47, 105,287.12 and 16,883.42 is: 25,325.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,191.47 : 105,287.12 = 16,883.42 : x
  2. Step 2: Convert to fraction form
    70,191.47/105,287.12 = 16,883.42/x
  3. Step 3: Cross multiply
    70,191.47x = 105,287.12 × 16,883.42
  4. Step 4: Simplify right side
    70,191.47x = 1,777,607,215.79
  5. Step 5: Solve for x
    x = 1,777,607,215.79/70,191.47
  6. Step 6: Final answer
    x = 25,325.12

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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.