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Finding the Fourth Proportional to 79,838.21, 110,171.69 and 45,822.75

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Solution

The fourth proportional to 79,838.21, 110,171.69 and 45,822.75 is: 63,232.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,838.21 : 110,171.69 = 45,822.75 : x
  2. Step 2: Convert to fraction form
    79,838.21/110,171.69 = 45,822.75/x
  3. Step 3: Cross multiply
    79,838.21x = 110,171.69 × 45,822.75
  4. Step 4: Simplify right side
    79,838.21x = 5,048,369,807.95
  5. Step 5: Solve for x
    x = 5,048,369,807.95/79,838.21
  6. Step 6: Final answer
    x = 63,232.50

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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.