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Finding the Fourth Proportional to 57,927.90, 81,215.70 and 57,927.90

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Solution

The fourth proportional to 57,927.90, 81,215.70 and 57,927.90 is: 81,215.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,927.90 : 81,215.70 = 57,927.90 : x
  2. Step 2: Convert to fraction form
    57,927.90/81,215.70 = 57,927.90/x
  3. Step 3: Cross multiply
    57,927.90x = 81,215.70 × 57,927.90
  4. Step 4: Simplify right side
    57,927.90x = 4,704,654,948.03
  5. Step 5: Solve for x
    x = 4,704,654,948.03/57,927.90
  6. Step 6: Final answer
    x = 81,215.70

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.