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Finding the Fourth Proportional to 79,243.79, 109,355.78 and 43,433.72

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Solution

The fourth proportional to 79,243.79, 109,355.78 and 43,433.72 is: 59,938.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,243.79 : 109,355.78 = 43,433.72 : x
  2. Step 2: Convert to fraction form
    79,243.79/109,355.78 = 43,433.72/x
  3. Step 3: Cross multiply
    79,243.79x = 109,355.78 × 43,433.72
  4. Step 4: Simplify right side
    79,243.79x = 4,749,728,328.90
  5. Step 5: Solve for x
    x = 4,749,728,328.90/79,243.79
  6. Step 6: Final answer
    x = 59,938.18

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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.