Home / 51,440.47-70,990.61-28,778.11

Finding the Fourth Proportional to 51,440.47, 70,990.61 and 28,778.11

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Solution

The fourth proportional to 51,440.47, 70,990.61 and 28,778.11 is: 39,715.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,440.47 : 70,990.61 = 28,778.11 : x
  2. Step 2: Convert to fraction form
    51,440.47/70,990.61 = 28,778.11/x
  3. Step 3: Cross multiply
    51,440.47x = 70,990.61 × 28,778.11
  4. Step 4: Simplify right side
    51,440.47x = 2,042,975,262.18
  5. Step 5: Solve for x
    x = 2,042,975,262.18/51,440.47
  6. Step 6: Final answer
    x = 39,715.33

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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.