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Finding the Fourth Proportional to 50,456.40, 75,684.48 and 27,980.82

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Solution

The fourth proportional to 50,456.40, 75,684.48 and 27,980.82 is: 41,971.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,456.40 : 75,684.48 = 27,980.82 : x
  2. Step 2: Convert to fraction form
    50,456.40/75,684.48 = 27,980.82/x
  3. Step 3: Cross multiply
    50,456.40x = 75,684.48 × 27,980.82
  4. Step 4: Simplify right side
    50,456.40x = 2,117,713,811.67
  5. Step 5: Solve for x
    x = 2,117,713,811.67/50,456.40
  6. Step 6: Final answer
    x = 41,971.16

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Double scale
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Similar ratio
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1.5x scale

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.