Home / 66,021.39-91,003.41-51,656.45

Finding the Fourth Proportional to 66,021.39, 91,003.41 and 51,656.45

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Solution

The fourth proportional to 66,021.39, 91,003.41 and 51,656.45 is: 71,202.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,021.39 : 91,003.41 = 51,656.45 : x
  2. Step 2: Convert to fraction form
    66,021.39/91,003.41 = 51,656.45/x
  3. Step 3: Cross multiply
    66,021.39x = 91,003.41 × 51,656.45
  4. Step 4: Simplify right side
    66,021.39x = 4,700,913,178.45
  5. Step 5: Solve for x
    x = 4,700,913,178.45/66,021.39
  6. Step 6: Final answer
    x = 71,202.88

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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.