Home / 78,281.08-117,435.66-36,727

Finding the Fourth Proportional to 78,281.08, 117,435.66 and 36,727

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Solution

The fourth proportional to 78,281.08, 117,435.66 and 36,727 is: 55,097.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,281.08 : 117,435.66 = 36,727 : x
  2. Step 2: Convert to fraction form
    78,281.08/117,435.66 = 36,727/x
  3. Step 3: Cross multiply
    78,281.08x = 117,435.66 × 36,727
  4. Step 4: Simplify right side
    78,281.08x = 4,313,059,484.82
  5. Step 5: Solve for x
    x = 4,313,059,484.82/78,281.08
  6. Step 6: Final answer
    x = 55,097.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.