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Finding the Fourth Proportional to 72,040.01, 107,985.08 and 29,943

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Solution

The fourth proportional to 72,040.01, 107,985.08 and 29,943 is: 44,883.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,040.01 : 107,985.08 = 29,943 : x
  2. Step 2: Convert to fraction form
    72,040.01/107,985.08 = 29,943/x
  3. Step 3: Cross multiply
    72,040.01x = 107,985.08 × 29,943
  4. Step 4: Simplify right side
    72,040.01x = 3,233,397,325.30
  5. Step 5: Solve for x
    x = 3,233,397,325.30/72,040.01
  6. Step 6: Final answer
    x = 44,883.36

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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.