Home / 78,003.13-107,644.40-42,193.03

Finding the Fourth Proportional to 78,003.13, 107,644.40 and 42,193.03

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Solution

The fourth proportional to 78,003.13, 107,644.40 and 42,193.03 is: 58,226.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,003.13 : 107,644.40 = 42,193.03 : x
  2. Step 2: Convert to fraction form
    78,003.13/107,644.40 = 42,193.03/x
  3. Step 3: Cross multiply
    78,003.13x = 107,644.40 × 42,193.03
  4. Step 4: Simplify right side
    78,003.13x = 4,541,843,398.53
  5. Step 5: Solve for x
    x = 4,541,843,398.53/78,003.13
  6. Step 6: Final answer
    x = 58,226.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.