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Finding the Fourth Proportional to 79,649.61, 109,915.60 and 43,838.85

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Solution

The fourth proportional to 79,649.61, 109,915.60 and 43,838.85 is: 60,497.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,649.61 : 109,915.60 = 43,838.85 : x
  2. Step 2: Convert to fraction form
    79,649.61/109,915.60 = 43,838.85/x
  3. Step 3: Cross multiply
    79,649.61x = 109,915.60 × 43,838.85
  4. Step 4: Simplify right side
    79,649.61x = 4,818,572,951.48
  5. Step 5: Solve for x
    x = 4,818,572,951.48/79,649.61
  6. Step 6: Final answer
    x = 60,497.13

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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.