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Finding the Fourth Proportional to 92,881.35, 128,215.50 and 62,707.54

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Solution

The fourth proportional to 92,881.35, 128,215.50 and 62,707.54 is: 86,562.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,881.35 : 128,215.50 = 62,707.54 : x
  2. Step 2: Convert to fraction form
    92,881.35/128,215.50 = 62,707.54/x
  3. Step 3: Cross multiply
    92,881.35x = 128,215.50 × 62,707.54
  4. Step 4: Simplify right side
    92,881.35x = 8,040,078,594.87
  5. Step 5: Solve for x
    x = 8,040,078,594.87/92,881.35
  6. Step 6: Final answer
    x = 86,562.90

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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.