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Finding the Fourth Proportional to 36,886, 55,351.68 and 19,368.40

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Solution

The fourth proportional to 36,886, 55,351.68 and 19,368.40 is: 29,064.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,886 : 55,351.68 = 19,368.40 : x
  2. Step 2: Convert to fraction form
    36,886/55,351.68 = 19,368.40/x
  3. Step 3: Cross multiply
    36,886x = 55,351.68 × 19,368.40
  4. Step 4: Simplify right side
    36,886x = 1,072,073,478.91
  5. Step 5: Solve for x
    x = 1,072,073,478.91/36,886
  6. Step 6: Final answer
    x = 29,064.51

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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.