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Finding the Fourth Proportional to 79,434.64, 109,621.62 and 43,627

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Solution

The fourth proportional to 79,434.64, 109,621.62 and 43,627 is: 60,206.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,434.64 : 109,621.62 = 43,627 : x
  2. Step 2: Convert to fraction form
    79,434.64/109,621.62 = 43,627/x
  3. Step 3: Cross multiply
    79,434.64x = 109,621.62 × 43,627
  4. Step 4: Simplify right side
    79,434.64x = 4,782,462,415.74
  5. Step 5: Solve for x
    x = 4,782,462,415.74/79,434.64
  6. Step 6: Final answer
    x = 60,206.26

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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.