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Finding the Fourth Proportional to 79,372.40, 119,058.60 and 61,855.40

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Solution

The fourth proportional to 79,372.40, 119,058.60 and 61,855.40 is: 92,783.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,372.40 : 119,058.60 = 61,855.40 : x
  2. Step 2: Convert to fraction form
    79,372.40/119,058.60 = 61,855.40/x
  3. Step 3: Cross multiply
    79,372.40x = 119,058.60 × 61,855.40
  4. Step 4: Simplify right side
    79,372.40x = 7,364,417,326.44
  5. Step 5: Solve for x
    x = 7,364,417,326.44/79,372.40
  6. Step 6: Final answer
    x = 92,783.10

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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.