Home / 52,795.78-72,859.00-28,920.87

Finding the Fourth Proportional to 52,795.78, 72,859.00 and 28,920.87

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Solution

The fourth proportional to 52,795.78, 72,859.00 and 28,920.87 is: 39,911.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,795.78 : 72,859.00 = 28,920.87 : x
  2. Step 2: Convert to fraction form
    52,795.78/72,859.00 = 28,920.87/x
  3. Step 3: Cross multiply
    52,795.78x = 72,859.00 × 28,920.87
  4. Step 4: Simplify right side
    52,795.78x = 2,107,145,976.70
  5. Step 5: Solve for x
    x = 2,107,145,976.70/52,795.78
  6. Step 6: Final answer
    x = 39,911.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.