Home / 66,199.72-91,332.66-42,340.36

Finding the Fourth Proportional to 66,199.72, 91,332.66 and 42,340.36

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Solution

The fourth proportional to 66,199.72, 91,332.66 and 42,340.36 is: 58,415.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,199.72 : 91,332.66 = 42,340.36 : x
  2. Step 2: Convert to fraction form
    66,199.72/91,332.66 = 42,340.36/x
  3. Step 3: Cross multiply
    66,199.72x = 91,332.66 × 42,340.36
  4. Step 4: Simplify right side
    66,199.72x = 3,867,057,704.16
  5. Step 5: Solve for x
    x = 3,867,057,704.16/66,199.72
  6. Step 6: Final answer
    x = 58,415.02

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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.