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Finding the Fourth Proportional to 73,889.70, 110,834.55 and 42,708.90

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Solution

The fourth proportional to 73,889.70, 110,834.55 and 42,708.90 is: 64,063.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,889.70 : 110,834.55 = 42,708.90 : x
  2. Step 2: Convert to fraction form
    73,889.70/110,834.55 = 42,708.90/x
  3. Step 3: Cross multiply
    73,889.70x = 110,834.55 × 42,708.90
  4. Step 4: Simplify right side
    73,889.70x = 4,733,621,712.50
  5. Step 5: Solve for x
    x = 4,733,621,712.50/73,889.70
  6. Step 6: Final answer
    x = 64,063.35

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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.