Home / 71,682.64-98,916.44-39,849.60

Finding the Fourth Proportional to 71,682.64, 98,916.44 and 39,849.60

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Solution

The fourth proportional to 71,682.64, 98,916.44 and 39,849.60 is: 54,989.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,682.64 : 98,916.44 = 39,849.60 : x
  2. Step 2: Convert to fraction form
    71,682.64/98,916.44 = 39,849.60/x
  3. Step 3: Cross multiply
    71,682.64x = 98,916.44 × 39,849.60
  4. Step 4: Simplify right side
    71,682.64x = 3,941,780,567.42
  5. Step 5: Solve for x
    x = 3,941,780,567.42/71,682.64
  6. Step 6: Final answer
    x = 54,989.33

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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.