Home / 66,305.51-91,513.46-42,431.37

Finding the Fourth Proportional to 66,305.51, 91,513.46 and 42,431.37

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Solution

The fourth proportional to 66,305.51, 91,513.46 and 42,431.37 is: 58,562.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,305.51 : 91,513.46 = 42,431.37 : x
  2. Step 2: Convert to fraction form
    66,305.51/91,513.46 = 42,431.37/x
  3. Step 3: Cross multiply
    66,305.51x = 91,513.46 × 42,431.37
  4. Step 4: Simplify right side
    66,305.51x = 3,883,041,481.24
  5. Step 5: Solve for x
    x = 3,883,041,481.24/66,305.51
  6. Step 6: Final answer
    x = 58,562.88

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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.