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Finding the Fourth Proportional to 79,648.90, 109,915.56 and 43,838.92

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Solution

The fourth proportional to 79,648.90, 109,915.56 and 43,838.92 is: 60,497.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,648.90 : 109,915.56 = 43,838.92 : x
  2. Step 2: Convert to fraction form
    79,648.90/109,915.56 = 43,838.92/x
  3. Step 3: Cross multiply
    79,648.90x = 109,915.56 × 43,838.92
  4. Step 4: Simplify right side
    79,648.90x = 4,818,579,441.60
  5. Step 5: Solve for x
    x = 4,818,579,441.60/79,648.90
  6. Step 6: Final answer
    x = 60,497.75

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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.