Home / 45,139.87-67,722.98-20,174.08

Finding the Fourth Proportional to 45,139.87, 67,722.98 and 20,174.08

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Solution

The fourth proportional to 45,139.87, 67,722.98 and 20,174.08 is: 30,267.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,139.87 : 67,722.98 = 20,174.08 : x
  2. Step 2: Convert to fraction form
    45,139.87/67,722.98 = 20,174.08/x
  3. Step 3: Cross multiply
    45,139.87x = 67,722.98 × 20,174.08
  4. Step 4: Simplify right side
    45,139.87x = 1,366,248,657.72
  5. Step 5: Solve for x
    x = 1,366,248,657.72/45,139.87
  6. Step 6: Final answer
    x = 30,267.01

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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.