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Finding the Fourth Proportional to 79,172.19, 109,253.52 and 43,355.28

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Solution

The fourth proportional to 79,172.19, 109,253.52 and 43,355.28 is: 59,828.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,172.19 : 109,253.52 = 43,355.28 : x
  2. Step 2: Convert to fraction form
    79,172.19/109,253.52 = 43,355.28/x
  3. Step 3: Cross multiply
    79,172.19x = 109,253.52 × 43,355.28
  4. Step 4: Simplify right side
    79,172.19x = 4,736,716,950.59
  5. Step 5: Solve for x
    x = 4,736,716,950.59/79,172.19
  6. Step 6: Final answer
    x = 59,828.04

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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.