Home / 52,143.48-78,221.28-18,879.21

Finding the Fourth Proportional to 52,143.48, 78,221.28 and 18,879.21

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Solution

The fourth proportional to 52,143.48, 78,221.28 and 18,879.21 is: 28,321.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,143.48 : 78,221.28 = 18,879.21 : x
  2. Step 2: Convert to fraction form
    52,143.48/78,221.28 = 18,879.21/x
  3. Step 3: Cross multiply
    52,143.48x = 78,221.28 × 18,879.21
  4. Step 4: Simplify right side
    52,143.48x = 1,476,755,971.59
  5. Step 5: Solve for x
    x = 1,476,755,971.59/52,143.48
  6. Step 6: Final answer
    x = 28,321.01

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1.5x scale

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.