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Finding the Fourth Proportional to 40,699.77, 61,009.10 and 19,633.79

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Solution

The fourth proportional to 40,699.77, 61,009.10 and 19,633.79 is: 29,431.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,699.77 : 61,009.10 = 19,633.79 : x
  2. Step 2: Convert to fraction form
    40,699.77/61,009.10 = 19,633.79/x
  3. Step 3: Cross multiply
    40,699.77x = 61,009.10 × 19,633.79
  4. Step 4: Simplify right side
    40,699.77x = 1,197,839,985.47
  5. Step 5: Solve for x
    x = 1,197,839,985.47/40,699.77
  6. Step 6: Final answer
    x = 29,431.13

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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.