Home / 57,158.16-78,878.10-31,664.57

Finding the Fourth Proportional to 57,158.16, 78,878.10 and 31,664.57

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Solution

The fourth proportional to 57,158.16, 78,878.10 and 31,664.57 is: 43,697.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,158.16 : 78,878.10 = 31,664.57 : x
  2. Step 2: Convert to fraction form
    57,158.16/78,878.10 = 31,664.57/x
  3. Step 3: Cross multiply
    57,158.16x = 78,878.10 × 31,664.57
  4. Step 4: Simplify right side
    57,158.16x = 2,497,641,286.96
  5. Step 5: Solve for x
    x = 2,497,641,286.96/57,158.16
  6. Step 6: Final answer
    x = 43,697.02

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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.