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Finding the Fourth Proportional to 79,530.86, 109,748.01 and 43,720.86

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Solution

The fourth proportional to 79,530.86, 109,748.01 and 43,720.86 is: 60,332.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,530.86 : 109,748.01 = 43,720.86 : x
  2. Step 2: Convert to fraction form
    79,530.86/109,748.01 = 43,720.86/x
  3. Step 3: Cross multiply
    79,530.86x = 109,748.01 × 43,720.86
  4. Step 4: Simplify right side
    79,530.86x = 4,798,277,956.00
  5. Step 5: Solve for x
    x = 4,798,277,956.00/79,530.86
  6. Step 6: Final answer
    x = 60,332.28

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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.