Home / 67,678.98-101,555.19-28,239.54

Finding the Fourth Proportional to 67,678.98, 101,555.19 and 28,239.54

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Solution

The fourth proportional to 67,678.98, 101,555.19 and 28,239.54 is: 42,374.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,678.98 : 101,555.19 = 28,239.54 : x
  2. Step 2: Convert to fraction form
    67,678.98/101,555.19 = 28,239.54/x
  3. Step 3: Cross multiply
    67,678.98x = 101,555.19 × 28,239.54
  4. Step 4: Simplify right side
    67,678.98x = 2,867,871,850.21
  5. Step 5: Solve for x
    x = 2,867,871,850.21/67,678.98
  6. Step 6: Final answer
    x = 42,374.63

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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.