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Finding the Fourth Proportional to 79,155.40, 109,246.80 and 45,163.84

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Solution

The fourth proportional to 79,155.40, 109,246.80 and 45,163.84 is: 62,333.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,155.40 : 109,246.80 = 45,163.84 : x
  2. Step 2: Convert to fraction form
    79,155.40/109,246.80 = 45,163.84/x
  3. Step 3: Cross multiply
    79,155.40x = 109,246.80 × 45,163.84
  4. Step 4: Simplify right side
    79,155.40x = 4,934,004,995.71
  5. Step 5: Solve for x
    x = 4,934,004,995.71/79,155.40
  6. Step 6: Final answer
    x = 62,333.14

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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.