Home / 66,585.06-91,856.43-39,711.42

Finding the Fourth Proportional to 66,585.06, 91,856.43 and 39,711.42

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Solution

The fourth proportional to 66,585.06, 91,856.43 and 39,711.42 is: 54,783.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,585.06 : 91,856.43 = 39,711.42 : x
  2. Step 2: Convert to fraction form
    66,585.06/91,856.43 = 39,711.42/x
  3. Step 3: Cross multiply
    66,585.06x = 91,856.43 × 39,711.42
  4. Step 4: Simplify right side
    66,585.06x = 3,647,749,271.43
  5. Step 5: Solve for x
    x = 3,647,749,271.43/66,585.06
  6. Step 6: Final answer
    x = 54,783.30

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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.