Home / 67,555.63-101,278.72-28,142.25

Finding the Fourth Proportional to 67,555.63, 101,278.72 and 28,142.25

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Solution

The fourth proportional to 67,555.63, 101,278.72 and 28,142.25 is: 42,190.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,555.63 : 101,278.72 = 28,142.25 : x
  2. Step 2: Convert to fraction form
    67,555.63/101,278.72 = 28,142.25/x
  3. Step 3: Cross multiply
    67,555.63x = 101,278.72 × 28,142.25
  4. Step 4: Simplify right side
    67,555.63x = 2,850,211,057.92
  5. Step 5: Solve for x
    x = 2,850,211,057.92/67,555.63
  6. Step 6: Final answer
    x = 42,190.58

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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.