Home / 53,146.11-79,691.47-19,838.78

Finding the Fourth Proportional to 53,146.11, 79,691.47 and 19,838.78

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Solution

The fourth proportional to 53,146.11, 79,691.47 and 19,838.78 is: 29,747.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,146.11 : 79,691.47 = 19,838.78 : x
  2. Step 2: Convert to fraction form
    53,146.11/79,691.47 = 19,838.78/x
  3. Step 3: Cross multiply
    53,146.11x = 79,691.47 × 19,838.78
  4. Step 4: Simplify right side
    53,146.11x = 1,580,981,541.21
  5. Step 5: Solve for x
    x = 1,580,981,541.21/53,146.11
  6. Step 6: Final answer
    x = 29,747.83

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1.5x scale

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.