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Finding the Fourth Proportional to 79,099.79, 109,156.25 and 43,289.08

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Solution

The fourth proportional to 79,099.79, 109,156.25 and 43,289.08 is: 59,738.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,099.79 : 109,156.25 = 43,289.08 : x
  2. Step 2: Convert to fraction form
    79,099.79/109,156.25 = 43,289.08/x
  3. Step 3: Cross multiply
    79,099.79x = 109,156.25 × 43,289.08
  4. Step 4: Simplify right side
    79,099.79x = 4,725,273,638.75
  5. Step 5: Solve for x
    x = 4,725,273,638.75/79,099.79
  6. Step 6: Final answer
    x = 59,738.13

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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.