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Finding the Fourth Proportional to 79,530.68, 109,752.30 and 43,723

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Solution

The fourth proportional to 79,530.68, 109,752.30 and 43,723 is: 60,337.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,530.68 : 109,752.30 = 43,723 : x
  2. Step 2: Convert to fraction form
    79,530.68/109,752.30 = 43,723/x
  3. Step 3: Cross multiply
    79,530.68x = 109,752.30 × 43,723
  4. Step 4: Simplify right side
    79,530.68x = 4,798,699,812.90
  5. Step 5: Solve for x
    x = 4,798,699,812.90/79,530.68
  6. Step 6: Final answer
    x = 60,337.72

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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.