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Finding the Fourth Proportional to 54,279, 74,909.34 and 31,927.32

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Solution

The fourth proportional to 54,279, 74,909.34 and 31,927.32 is: 44,062.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,279 : 74,909.34 = 31,927.32 : x
  2. Step 2: Convert to fraction form
    54,279/74,909.34 = 31,927.32/x
  3. Step 3: Cross multiply
    54,279x = 74,909.34 × 31,927.32
  4. Step 4: Simplify right side
    54,279x = 2,391,654,469.17
  5. Step 5: Solve for x
    x = 2,391,654,469.17/54,279
  6. Step 6: Final answer
    x = 44,062.24

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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.