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Finding the Fourth Proportional to 105,294.89, 145,260.32 and 62,828.88

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Solution

The fourth proportional to 105,294.89, 145,260.32 and 62,828.88 is: 86,676.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,294.89 : 145,260.32 = 62,828.88 : x
  2. Step 2: Convert to fraction form
    105,294.89/145,260.32 = 62,828.88/x
  3. Step 3: Cross multiply
    105,294.89x = 145,260.32 × 62,828.88
  4. Step 4: Simplify right side
    105,294.89x = 9,126,542,899.90
  5. Step 5: Solve for x
    x = 9,126,542,899.90/105,294.89
  6. Step 6: Final answer
    x = 86,676.03

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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.