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Finding the Fourth Proportional to 79,502.45, 109,728.88 and 52,646.09

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Solution

The fourth proportional to 79,502.45, 109,728.88 and 52,646.09 is: 72,661.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,502.45 : 109,728.88 = 52,646.09 : x
  2. Step 2: Convert to fraction form
    79,502.45/109,728.88 = 52,646.09/x
  3. Step 3: Cross multiply
    79,502.45x = 109,728.88 × 52,646.09
  4. Step 4: Simplify right side
    79,502.45x = 5,776,795,811.82
  5. Step 5: Solve for x
    x = 5,776,795,811.82/79,502.45
  6. Step 6: Final answer
    x = 72,661.86

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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.