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Finding the Fourth Proportional to 79,659.30, 109,916.97 and 45,661.53

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Solution

The fourth proportional to 79,659.30, 109,916.97 and 45,661.53 is: 63,005.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,659.30 : 109,916.97 = 45,661.53 : x
  2. Step 2: Convert to fraction form
    79,659.30/109,916.97 = 45,661.53/x
  3. Step 3: Cross multiply
    79,659.30x = 109,916.97 × 45,661.53
  4. Step 4: Simplify right side
    79,659.30x = 5,018,977,023.16
  5. Step 5: Solve for x
    x = 5,018,977,023.16/79,659.30
  6. Step 6: Final answer
    x = 63,005.54

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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.