Home / 81,788.31-122,670.09-52,411.41

Finding the Fourth Proportional to 81,788.31, 122,670.09 and 52,411.41

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Solution

The fourth proportional to 81,788.31, 122,670.09 and 52,411.41 is: 78,609.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,788.31 : 122,670.09 = 52,411.41 : x
  2. Step 2: Convert to fraction form
    81,788.31/122,670.09 = 52,411.41/x
  3. Step 3: Cross multiply
    81,788.31x = 122,670.09 × 52,411.41
  4. Step 4: Simplify right side
    81,788.31x = 6,429,312,381.73
  5. Step 5: Solve for x
    x = 6,429,312,381.73/81,788.31
  6. Step 6: Final answer
    x = 78,609.18

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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.