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Finding the Fourth Proportional to 105,676.98, 145,841.01 and 57,930.45

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Solution

The fourth proportional to 105,676.98, 145,841.01 and 57,930.45 is: 79,947.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,676.98 : 145,841.01 = 57,930.45 : x
  2. Step 2: Convert to fraction form
    105,676.98/145,841.01 = 57,930.45/x
  3. Step 3: Cross multiply
    105,676.98x = 145,841.01 × 57,930.45
  4. Step 4: Simplify right side
    105,676.98x = 8,448,635,337.75
  5. Step 5: Solve for x
    x = 8,448,635,337.75/105,676.98
  6. Step 6: Final answer
    x = 79,947.74

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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.