Home / 57,976.31-86,981.06-28,402.80

Finding the Fourth Proportional to 57,976.31, 86,981.06 and 28,402.80

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Solution

The fourth proportional to 57,976.31, 86,981.06 and 28,402.80 is: 42,612.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,976.31 : 86,981.06 = 28,402.80 : x
  2. Step 2: Convert to fraction form
    57,976.31/86,981.06 = 28,402.80/x
  3. Step 3: Cross multiply
    57,976.31x = 86,981.06 × 28,402.80
  4. Step 4: Simplify right side
    57,976.31x = 2,470,505,721.98
  5. Step 5: Solve for x
    x = 2,470,505,721.98/57,976.31
  6. Step 6: Final answer
    x = 42,612.33

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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.