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Finding the Fourth Proportional to 47,149.78, 65,065.47 and 28,029.59

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Solution

The fourth proportional to 47,149.78, 65,065.47 and 28,029.59 is: 38,680.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,149.78 : 65,065.47 = 28,029.59 : x
  2. Step 2: Convert to fraction form
    47,149.78/65,065.47 = 28,029.59/x
  3. Step 3: Cross multiply
    47,149.78x = 65,065.47 × 28,029.59
  4. Step 4: Simplify right side
    47,149.78x = 1,823,758,764.77
  5. Step 5: Solve for x
    x = 1,823,758,764.77/47,149.78
  6. Step 6: Final answer
    x = 38,680.11

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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.