Home / 66,519.82-91,798.43-39,678.04

Finding the Fourth Proportional to 66,519.82, 91,798.43 and 39,678.04

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Solution

The fourth proportional to 66,519.82, 91,798.43 and 39,678.04 is: 54,756.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,519.82 : 91,798.43 = 39,678.04 : x
  2. Step 2: Convert to fraction form
    66,519.82/91,798.43 = 39,678.04/x
  3. Step 3: Cross multiply
    66,519.82x = 91,798.43 × 39,678.04
  4. Step 4: Simplify right side
    66,519.82x = 3,642,381,777.48
  5. Step 5: Solve for x
    x = 3,642,381,777.48/66,519.82
  6. Step 6: Final answer
    x = 54,756.34

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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.