Home / 66,078.56-91,264.10-43,518.40

Finding the Fourth Proportional to 66,078.56, 91,264.10 and 43,518.40

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Solution

The fourth proportional to 66,078.56, 91,264.10 and 43,518.40 is: 60,105.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,078.56 : 91,264.10 = 43,518.40 : x
  2. Step 2: Convert to fraction form
    66,078.56/91,264.10 = 43,518.40/x
  3. Step 3: Cross multiply
    66,078.56x = 91,264.10 × 43,518.40
  4. Step 4: Simplify right side
    66,078.56x = 3,971,667,163.69
  5. Step 5: Solve for x
    x = 3,971,667,163.69/66,078.56
  6. Step 6: Final answer
    x = 60,105.23

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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.