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Finding the Fourth Proportional to 79,658.30, 109,915.59 and 45,660.53

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Solution

The fourth proportional to 79,658.30, 109,915.59 and 45,660.53 is: 63,004.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,658.30 : 109,915.59 = 45,660.53 : x
  2. Step 2: Convert to fraction form
    79,658.30/109,915.59 = 45,660.53/x
  3. Step 3: Cross multiply
    79,658.30x = 109,915.59 × 45,660.53
  4. Step 4: Simplify right side
    79,658.30x = 5,018,804,540.68
  5. Step 5: Solve for x
    x = 5,018,804,540.68/79,658.30
  6. Step 6: Final answer
    x = 63,004.16

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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.