Home / 55,931.08-77,167.51-31,728.06

Finding the Fourth Proportional to 55,931.08, 77,167.51 and 31,728.06

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Solution

The fourth proportional to 55,931.08, 77,167.51 and 31,728.06 is: 43,774.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,931.08 : 77,167.51 = 31,728.06 : x
  2. Step 2: Convert to fraction form
    55,931.08/77,167.51 = 31,728.06/x
  3. Step 3: Cross multiply
    55,931.08x = 77,167.51 × 31,728.06
  4. Step 4: Simplify right side
    55,931.08x = 2,448,375,387.33
  5. Step 5: Solve for x
    x = 2,448,375,387.33/55,931.08
  6. Step 6: Final answer
    x = 43,774.86

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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.