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Finding the Fourth Proportional to 71,683.06, 98,928.62 and 39,854.92

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Solution

The fourth proportional to 71,683.06, 98,928.62 and 39,854.92 is: 55,003.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,683.06 : 98,928.62 = 39,854.92 : x
  2. Step 2: Convert to fraction form
    71,683.06/98,928.62 = 39,854.92/x
  3. Step 3: Cross multiply
    71,683.06x = 98,928.62 × 39,854.92
  4. Step 4: Simplify right side
    71,683.06x = 3,942,792,235.81
  5. Step 5: Solve for x
    x = 3,942,792,235.81/71,683.06
  6. Step 6: Final answer
    x = 55,003.12

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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.