Home / 52,143.48-78,168.43-18,855.72

Finding the Fourth Proportional to 52,143.48, 78,168.43 and 18,855.72

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Solution

The fourth proportional to 52,143.48, 78,168.43 and 18,855.72 is: 28,266.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,143.48 : 78,168.43 = 18,855.72 : x
  2. Step 2: Convert to fraction form
    52,143.48/78,168.43 = 18,855.72/x
  3. Step 3: Cross multiply
    52,143.48x = 78,168.43 × 18,855.72
  4. Step 4: Simplify right side
    52,143.48x = 1,473,922,028.92
  5. Step 5: Solve for x
    x = 1,473,922,028.92/52,143.48
  6. Step 6: Final answer
    x = 28,266.66

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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.