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Finding the Fourth Proportional to 79,326.98, 109,464.26 and 45,328.72

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Solution

The fourth proportional to 79,326.98, 109,464.26 and 45,328.72 is: 62,549.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,326.98 : 109,464.26 = 45,328.72 : x
  2. Step 2: Convert to fraction form
    79,326.98/109,464.26 = 45,328.72/x
  3. Step 3: Cross multiply
    79,326.98x = 109,464.26 × 45,328.72
  4. Step 4: Simplify right side
    79,326.98x = 4,961,874,791.55
  5. Step 5: Solve for x
    x = 4,961,874,791.55/79,326.98
  6. Step 6: Final answer
    x = 62,549.65

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1.5x scale

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.