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Finding the Fourth Proportional to 85,844.82, 128,726.37 and 26,681.34

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Solution

The fourth proportional to 85,844.82, 128,726.37 and 26,681.34 is: 40,009.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,844.82 : 128,726.37 = 26,681.34 : x
  2. Step 2: Convert to fraction form
    85,844.82/128,726.37 = 26,681.34/x
  3. Step 3: Cross multiply
    85,844.82x = 128,726.37 × 26,681.34
  4. Step 4: Simplify right side
    85,844.82x = 3,434,592,044.94
  5. Step 5: Solve for x
    x = 3,434,592,044.94/85,844.82
  6. Step 6: Final answer
    x = 40,009.31

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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.