Home / 57,130.44-78,832.62-31,979.94

Finding the Fourth Proportional to 57,130.44, 78,832.62 and 31,979.94

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Solution

The fourth proportional to 57,130.44, 78,832.62 and 31,979.94 is: 44,128.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,130.44 : 78,832.62 = 31,979.94 : x
  2. Step 2: Convert to fraction form
    57,130.44/78,832.62 = 31,979.94/x
  3. Step 3: Cross multiply
    57,130.44x = 78,832.62 × 31,979.94
  4. Step 4: Simplify right side
    57,130.44x = 2,521,062,457.64
  5. Step 5: Solve for x
    x = 2,521,062,457.64/57,130.44
  6. Step 6: Final answer
    x = 44,128.18

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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.