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Finding the Fourth Proportional to 79,113.85, 109,172.89 and 43,296.93

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Solution

The fourth proportional to 79,113.85, 109,172.89 and 43,296.93 is: 59,747.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,113.85 : 109,172.89 = 43,296.93 : x
  2. Step 2: Convert to fraction form
    79,113.85/109,172.89 = 43,296.93/x
  3. Step 3: Cross multiply
    79,113.85x = 109,172.89 × 43,296.93
  4. Step 4: Simplify right side
    79,113.85x = 4,726,850,976.23
  5. Step 5: Solve for x
    x = 4,726,850,976.23/79,113.85
  6. Step 6: Final answer
    x = 59,747.45

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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.