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Finding the Fourth Proportional to 70,742.43, 106,117.43 and 18,152.37

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Solution

The fourth proportional to 70,742.43, 106,117.43 and 18,152.37 is: 27,229.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,742.43 : 106,117.43 = 18,152.37 : x
  2. Step 2: Convert to fraction form
    70,742.43/106,117.43 = 18,152.37/x
  3. Step 3: Cross multiply
    70,742.43x = 106,117.43 × 18,152.37
  4. Step 4: Simplify right side
    70,742.43x = 1,926,282,762.05
  5. Step 5: Solve for x
    x = 1,926,282,762.05/70,742.43
  6. Step 6: Final answer
    x = 27,229.52

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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.