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Finding the Fourth Proportional to 40,710.66, 61,066.08 and 19,919.58

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Solution

The fourth proportional to 40,710.66, 61,066.08 and 19,919.58 is: 29,879.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,710.66 : 61,066.08 = 19,919.58 : x
  2. Step 2: Convert to fraction form
    40,710.66/61,066.08 = 19,919.58/x
  3. Step 3: Cross multiply
    40,710.66x = 61,066.08 × 19,919.58
  4. Step 4: Simplify right side
    40,710.66x = 1,216,410,665.85
  5. Step 5: Solve for x
    x = 1,216,410,665.85/40,710.66
  6. Step 6: Final answer
    x = 29,879.41

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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.