Home / 40,815.09-61,264.35-21,107.79

Finding the Fourth Proportional to 40,815.09, 61,264.35 and 21,107.79

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Solution

The fourth proportional to 40,815.09, 61,264.35 and 21,107.79 is: 31,683.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,815.09 : 61,264.35 = 21,107.79 : x
  2. Step 2: Convert to fraction form
    40,815.09/61,264.35 = 21,107.79/x
  3. Step 3: Cross multiply
    40,815.09x = 61,264.35 × 21,107.79
  4. Step 4: Simplify right side
    40,815.09x = 1,293,155,034.29
  5. Step 5: Solve for x
    x = 1,293,155,034.29/40,815.09
  6. Step 6: Final answer
    x = 31,683.26

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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.