Home / 66,431.13-91,623.12-42,560.03

Finding the Fourth Proportional to 66,431.13, 91,623.12 and 42,560.03

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Solution

The fourth proportional to 66,431.13, 91,623.12 and 42,560.03 is: 58,699.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,431.13 : 91,623.12 = 42,560.03 : x
  2. Step 2: Convert to fraction form
    66,431.13/91,623.12 = 42,560.03/x
  3. Step 3: Cross multiply
    66,431.13x = 91,623.12 × 42,560.03
  4. Step 4: Simplify right side
    66,431.13x = 3,899,482,277.78
  5. Step 5: Solve for x
    x = 3,899,482,277.78/66,431.13
  6. Step 6: Final answer
    x = 58,699.62

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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.