Home / 69,840.59-104,743.53-19,921.12

Finding the Fourth Proportional to 69,840.59, 104,743.53 and 19,921.12

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Solution

The fourth proportional to 69,840.59, 104,743.53 and 19,921.12 is: 29,876.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,840.59 : 104,743.53 = 19,921.12 : x
  2. Step 2: Convert to fraction form
    69,840.59/104,743.53 = 19,921.12/x
  3. Step 3: Cross multiply
    69,840.59x = 104,743.53 × 19,921.12
  4. Step 4: Simplify right side
    69,840.59x = 2,086,607,831.93
  5. Step 5: Solve for x
    x = 2,086,607,831.93/69,840.59
  6. Step 6: Final answer
    x = 29,876.72

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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.