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Finding the Fourth Proportional to 79,530.32, 109,754.88 and 43,723.28

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Solution

The fourth proportional to 79,530.32, 109,754.88 and 43,723.28 is: 60,339.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,530.32 : 109,754.88 = 43,723.28 : x
  2. Step 2: Convert to fraction form
    79,530.32/109,754.88 = 43,723.28/x
  3. Step 3: Cross multiply
    79,530.32x = 109,754.88 × 43,723.28
  4. Step 4: Simplify right side
    79,530.32x = 4,798,843,349.61
  5. Step 5: Solve for x
    x = 4,798,843,349.61/79,530.32
  6. Step 6: Final answer
    x = 60,339.80

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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.