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Finding the Fourth Proportional to 40,686.71, 61,030.06 and 19,895.63

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Solution

The fourth proportional to 40,686.71, 61,030.06 and 19,895.63 is: 29,843.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,686.71 : 61,030.06 = 19,895.63 : x
  2. Step 2: Convert to fraction form
    40,686.71/61,030.06 = 19,895.63/x
  3. Step 3: Cross multiply
    40,686.71x = 61,030.06 × 19,895.63
  4. Step 4: Simplify right side
    40,686.71x = 1,214,231,137.75
  5. Step 5: Solve for x
    x = 1,214,231,137.75/40,686.71
  6. Step 6: Final answer
    x = 29,843.44

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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.