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Finding the Fourth Proportional to 79,530.69, 109,750.16 and 43,720.73

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Solution

The fourth proportional to 79,530.69, 109,750.16 and 43,720.73 is: 60,333.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,530.69 : 109,750.16 = 43,720.73 : x
  2. Step 2: Convert to fraction form
    79,530.69/109,750.16 = 43,720.73/x
  3. Step 3: Cross multiply
    79,530.69x = 109,750.16 × 43,720.73
  4. Step 4: Simplify right side
    79,530.69x = 4,798,357,112.82
  5. Step 5: Solve for x
    x = 4,798,357,112.82/79,530.69
  6. Step 6: Final answer
    x = 60,333.40

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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.