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Finding the Fourth Proportional to 55,806.21, 83,721.43 and 18,370.08

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Solution

The fourth proportional to 55,806.21, 83,721.43 and 18,370.08 is: 27,559.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,806.21 : 83,721.43 = 18,370.08 : x
  2. Step 2: Convert to fraction form
    55,806.21/83,721.43 = 18,370.08/x
  3. Step 3: Cross multiply
    55,806.21x = 83,721.43 × 18,370.08
  4. Step 4: Simplify right side
    55,806.21x = 1,537,969,366.81
  5. Step 5: Solve for x
    x = 1,537,969,366.81/55,806.21
  6. Step 6: Final answer
    x = 27,559.11

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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.