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Finding the Fourth Proportional to 57,361.92, 86,040.32 and 15,810.56

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Solution

The fourth proportional to 57,361.92, 86,040.32 and 15,810.56 is: 23,715.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,361.92 : 86,040.32 = 15,810.56 : x
  2. Step 2: Convert to fraction form
    57,361.92/86,040.32 = 15,810.56/x
  3. Step 3: Cross multiply
    57,361.92x = 86,040.32 × 15,810.56
  4. Step 4: Simplify right side
    57,361.92x = 1,360,345,641.78
  5. Step 5: Solve for x
    x = 1,360,345,641.78/57,361.92
  6. Step 6: Final answer
    x = 23,715.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.