Home / 53,145.11-79,689.97-19,837.78

Finding the Fourth Proportional to 53,145.11, 79,689.97 and 19,837.78

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Solution

The fourth proportional to 53,145.11, 79,689.97 and 19,837.78 is: 29,746.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,145.11 : 79,689.97 = 19,837.78 : x
  2. Step 2: Convert to fraction form
    53,145.11/79,689.97 = 19,837.78/x
  3. Step 3: Cross multiply
    53,145.11x = 79,689.97 × 19,837.78
  4. Step 4: Simplify right side
    53,145.11x = 1,580,872,093.07
  5. Step 5: Solve for x
    x = 1,580,872,093.07/53,145.11
  6. Step 6: Final answer
    x = 29,746.33

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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.