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Finding the Fourth Proportional to 57,376.76, 86,062.80 and 19,945.32

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Solution

The fourth proportional to 57,376.76, 86,062.80 and 19,945.32 is: 29,917.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,376.76 : 86,062.80 = 19,945.32 : x
  2. Step 2: Convert to fraction form
    57,376.76/86,062.80 = 19,945.32/x
  3. Step 3: Cross multiply
    57,376.76x = 86,062.80 × 19,945.32
  4. Step 4: Simplify right side
    57,376.76x = 1,716,550,086.10
  5. Step 5: Solve for x
    x = 1,716,550,086.10/57,376.76
  6. Step 6: Final answer
    x = 29,917.17

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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.