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Finding the Fourth Proportional to 79,157.61, 109,239.98 and 43,351.02

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Solution

The fourth proportional to 79,157.61, 109,239.98 and 43,351.02 is: 59,825.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,157.61 : 109,239.98 = 43,351.02 : x
  2. Step 2: Convert to fraction form
    79,157.61/109,239.98 = 43,351.02/x
  3. Step 3: Cross multiply
    79,157.61x = 109,239.98 × 43,351.02
  4. Step 4: Simplify right side
    79,157.61x = 4,735,664,341.02
  5. Step 5: Solve for x
    x = 4,735,664,341.02/79,157.61
  6. Step 6: Final answer
    x = 59,825.76

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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.