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Finding the Fourth Proportional to 84,389.05, 126,443.31 and 59,376.61

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Solution

The fourth proportional to 84,389.05, 126,443.31 and 59,376.61 is: 88,966.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,389.05 : 126,443.31 = 59,376.61 : x
  2. Step 2: Convert to fraction form
    84,389.05/126,443.31 = 59,376.61/x
  3. Step 3: Cross multiply
    84,389.05x = 126,443.31 × 59,376.61
  4. Step 4: Simplify right side
    84,389.05x = 7,507,775,104.98
  5. Step 5: Solve for x
    x = 7,507,775,104.98/84,389.05
  6. Step 6: Final answer
    x = 88,966.22

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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.