Home / 71,509.60-98,683.68-39,679.12

Finding the Fourth Proportional to 71,509.60, 98,683.68 and 39,679.12

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Solution

The fourth proportional to 71,509.60, 98,683.68 and 39,679.12 is: 54,757.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,509.60 : 98,683.68 = 39,679.12 : x
  2. Step 2: Convert to fraction form
    71,509.60/98,683.68 = 39,679.12/x
  3. Step 3: Cross multiply
    71,509.60x = 98,683.68 × 39,679.12
  4. Step 4: Simplify right side
    71,509.60x = 3,915,681,580.76
  5. Step 5: Solve for x
    x = 3,915,681,580.76/71,509.60
  6. Step 6: Final answer
    x = 54,757.43

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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.