Home / 71,513.60-98,689.20-39,683.12

Finding the Fourth Proportional to 71,513.60, 98,689.20 and 39,683.12

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Solution

The fourth proportional to 71,513.60, 98,689.20 and 39,683.12 is: 54,762.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,513.60 : 98,689.20 = 39,683.12 : x
  2. Step 2: Convert to fraction form
    71,513.60/98,689.20 = 39,683.12/x
  3. Step 3: Cross multiply
    71,513.60x = 98,689.20 × 39,683.12
  4. Step 4: Simplify right side
    71,513.60x = 3,916,295,366.30
  5. Step 5: Solve for x
    x = 3,916,295,366.30/71,513.60
  6. Step 6: Final answer
    x = 54,762.95

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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.