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Finding the Fourth Proportional to 89,911.92, 124,120.44 and 52,178.88

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Solution

The fourth proportional to 89,911.92, 124,120.44 and 52,178.88 is: 72,031.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,911.92 : 124,120.44 = 52,178.88 : x
  2. Step 2: Convert to fraction form
    89,911.92/124,120.44 = 52,178.88/x
  3. Step 3: Cross multiply
    89,911.92x = 124,120.44 × 52,178.88
  4. Step 4: Simplify right side
    89,911.92x = 6,476,465,544.31
  5. Step 5: Solve for x
    x = 6,476,465,544.31/89,911.92
  6. Step 6: Final answer
    x = 72,031.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.