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Finding the Fourth Proportional to 79,811.70, 110,109.16 and 45,807.90

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Solution

The fourth proportional to 79,811.70, 110,109.16 and 45,807.90 is: 63,197.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,811.70 : 110,109.16 = 45,807.90 : x
  2. Step 2: Convert to fraction form
    79,811.70/110,109.16 = 45,807.90/x
  3. Step 3: Cross multiply
    79,811.70x = 110,109.16 × 45,807.90
  4. Step 4: Simplify right side
    79,811.70x = 5,043,869,390.36
  5. Step 5: Solve for x
    x = 5,043,869,390.36/79,811.70
  6. Step 6: Final answer
    x = 63,197.12

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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.