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Finding the Fourth Proportional to 84,404.66, 126,669.18 and 40,031.54

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Solution

The fourth proportional to 84,404.66, 126,669.18 and 40,031.54 is: 60,076.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,404.66 : 126,669.18 = 40,031.54 : x
  2. Step 2: Convert to fraction form
    84,404.66/126,669.18 = 40,031.54/x
  3. Step 3: Cross multiply
    84,404.66x = 126,669.18 × 40,031.54
  4. Step 4: Simplify right side
    84,404.66x = 5,070,762,345.94
  5. Step 5: Solve for x
    x = 5,070,762,345.94/84,404.66
  6. Step 6: Final answer
    x = 60,076.81

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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.