Home / 74,309.06-111,470.07-21,001.60

Finding the Fourth Proportional to 74,309.06, 111,470.07 and 21,001.60

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Solution

The fourth proportional to 74,309.06, 111,470.07 and 21,001.60 is: 31,504.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,309.06 : 111,470.07 = 21,001.60 : x
  2. Step 2: Convert to fraction form
    74,309.06/111,470.07 = 21,001.60/x
  3. Step 3: Cross multiply
    74,309.06x = 111,470.07 × 21,001.60
  4. Step 4: Simplify right side
    74,309.06x = 2,341,049,822.11
  5. Step 5: Solve for x
    x = 2,341,049,822.11/74,309.06
  6. Step 6: Final answer
    x = 31,504.23

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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.