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Finding the Fourth Proportional to 57,876.42, 86,809.02 and 39,275.99

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Solution

The fourth proportional to 57,876.42, 86,809.02 and 39,275.99 is: 58,910.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,876.42 : 86,809.02 = 39,275.99 : x
  2. Step 2: Convert to fraction form
    57,876.42/86,809.02 = 39,275.99/x
  3. Step 3: Cross multiply
    57,876.42x = 86,809.02 × 39,275.99
  4. Step 4: Simplify right side
    57,876.42x = 3,409,509,945.63
  5. Step 5: Solve for x
    x = 3,409,509,945.63/57,876.42
  6. Step 6: Final answer
    x = 58,910.17

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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.