Home / 57,236.29-78,903.11-40,188.62

Finding the Fourth Proportional to 57,236.29, 78,903.11 and 40,188.62

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Solution

The fourth proportional to 57,236.29, 78,903.11 and 40,188.62 is: 55,402.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,236.29 : 78,903.11 = 40,188.62 : x
  2. Step 2: Convert to fraction form
    57,236.29/78,903.11 = 40,188.62/x
  3. Step 3: Cross multiply
    57,236.29x = 78,903.11 × 40,188.62
  4. Step 4: Simplify right side
    57,236.29x = 3,171,007,402.34
  5. Step 5: Solve for x
    x = 3,171,007,402.34/57,236.29
  6. Step 6: Final answer
    x = 55,402.05

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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.