Home / 51,240.76-70,712.09-28,579.78

Finding the Fourth Proportional to 51,240.76, 70,712.09 and 28,579.78

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Solution

The fourth proportional to 51,240.76, 70,712.09 and 28,579.78 is: 39,440.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,240.76 : 70,712.09 = 28,579.78 : x
  2. Step 2: Convert to fraction form
    51,240.76/70,712.09 = 28,579.78/x
  3. Step 3: Cross multiply
    51,240.76x = 70,712.09 × 28,579.78
  4. Step 4: Simplify right side
    51,240.76x = 2,020,935,975.54
  5. Step 5: Solve for x
    x = 2,020,935,975.54/51,240.76
  6. Step 6: Final answer
    x = 39,440.01

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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.