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Finding the Fourth Proportional to 42,661.71, 64,009.20 and 17,695.44

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Solution

The fourth proportional to 42,661.71, 64,009.20 and 17,695.44 is: 26,550.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,661.71 : 64,009.20 = 17,695.44 : x
  2. Step 2: Convert to fraction form
    42,661.71/64,009.20 = 17,695.44/x
  3. Step 3: Cross multiply
    42,661.71x = 64,009.20 × 17,695.44
  4. Step 4: Simplify right side
    42,661.71x = 1,132,670,958.05
  5. Step 5: Solve for x
    x = 1,132,670,958.05/42,661.71
  6. Step 6: Final answer
    x = 26,550.06

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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.