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Finding the Fourth Proportional to 93,568.87, 129,261.64 and 80,971.75

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Solution

The fourth proportional to 93,568.87, 129,261.64 and 80,971.75 is: 111,859.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,568.87 : 129,261.64 = 80,971.75 : x
  2. Step 2: Convert to fraction form
    93,568.87/129,261.64 = 80,971.75/x
  3. Step 3: Cross multiply
    93,568.87x = 129,261.64 × 80,971.75
  4. Step 4: Simplify right side
    93,568.87x = 10,466,540,552.36
  5. Step 5: Solve for x
    x = 10,466,540,552.36/93,568.87
  6. Step 6: Final answer
    x = 111,859.22

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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.