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Finding the Fourth Proportional to 69,720, 96,214.22 and 37,888.90

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Solution

The fourth proportional to 69,720, 96,214.22 and 37,888.90 is: 52,287.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,720 : 96,214.22 = 37,888.90 : x
  2. Step 2: Convert to fraction form
    69,720/96,214.22 = 37,888.90/x
  3. Step 3: Cross multiply
    69,720x = 96,214.22 × 37,888.90
  4. Step 4: Simplify right side
    69,720x = 3,645,450,960.16
  5. Step 5: Solve for x
    x = 3,645,450,960.16/69,720
  6. Step 6: Final answer
    x = 52,287.02

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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.