Home / 66,455.55-91,716.84-38,160.63

Finding the Fourth Proportional to 66,455.55, 91,716.84 and 38,160.63

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Solution

The fourth proportional to 66,455.55, 91,716.84 and 38,160.63 is: 52,666.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,455.55 : 91,716.84 = 38,160.63 : x
  2. Step 2: Convert to fraction form
    66,455.55/91,716.84 = 38,160.63/x
  3. Step 3: Cross multiply
    66,455.55x = 91,716.84 × 38,160.63
  4. Step 4: Simplify right side
    66,455.55x = 3,499,972,396.01
  5. Step 5: Solve for x
    x = 3,499,972,396.01/66,455.55
  6. Step 6: Final answer
    x = 52,666.37

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1.5x scale

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.