Home / 78,491.14-108,341.49-53,355.22

Finding the Fourth Proportional to 78,491.14, 108,341.49 and 53,355.22

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Solution

The fourth proportional to 78,491.14, 108,341.49 and 53,355.22 is: 73,646.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,491.14 : 108,341.49 = 53,355.22 : x
  2. Step 2: Convert to fraction form
    78,491.14/108,341.49 = 53,355.22/x
  3. Step 3: Cross multiply
    78,491.14x = 108,341.49 × 53,355.22
  4. Step 4: Simplify right side
    78,491.14x = 5,780,584,034.08
  5. Step 5: Solve for x
    x = 5,780,584,034.08/78,491.14
  6. Step 6: Final answer
    x = 73,646.33

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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.