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Finding the Fourth Proportional to 65,699.52, 90,665.44 and 37,405.22

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Solution

The fourth proportional to 65,699.52, 90,665.44 and 37,405.22 is: 51,619.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,699.52 : 90,665.44 = 37,405.22 : x
  2. Step 2: Convert to fraction form
    65,699.52/90,665.44 = 37,405.22/x
  3. Step 3: Cross multiply
    65,699.52x = 90,665.44 × 37,405.22
  4. Step 4: Simplify right side
    65,699.52x = 3,391,360,729.60
  5. Step 5: Solve for x
    x = 3,391,360,729.60/65,699.52
  6. Step 6: Final answer
    x = 51,619.26

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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.