Home / 47,309.78-70,963.13-19,221.53

Finding the Fourth Proportional to 47,309.78, 70,963.13 and 19,221.53

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Solution

The fourth proportional to 47,309.78, 70,963.13 and 19,221.53 is: 28,831.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,309.78 : 70,963.13 = 19,221.53 : x
  2. Step 2: Convert to fraction form
    47,309.78/70,963.13 = 19,221.53/x
  3. Step 3: Cross multiply
    47,309.78x = 70,963.13 × 19,221.53
  4. Step 4: Simplify right side
    47,309.78x = 1,364,019,481.27
  5. Step 5: Solve for x
    x = 1,364,019,481.27/47,309.78
  6. Step 6: Final answer
    x = 28,831.66

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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.