Home / 66,431.14-91,623.12-42,560.02

Finding the Fourth Proportional to 66,431.14, 91,623.12 and 42,560.02

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Solution

The fourth proportional to 66,431.14, 91,623.12 and 42,560.02 is: 58,699.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,431.14 : 91,623.12 = 42,560.02 : x
  2. Step 2: Convert to fraction form
    66,431.14/91,623.12 = 42,560.02/x
  3. Step 3: Cross multiply
    66,431.14x = 91,623.12 × 42,560.02
  4. Step 4: Simplify right side
    66,431.14x = 3,899,481,819.66
  5. Step 5: Solve for x
    x = 3,899,481,819.66/66,431.14
  6. Step 6: Final answer
    x = 58,699.61

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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.