Home / 78,628.04-117,786.54-36,948.68

Finding the Fourth Proportional to 78,628.04, 117,786.54 and 36,948.68

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Solution

The fourth proportional to 78,628.04, 117,786.54 and 36,948.68 is: 55,349.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,628.04 : 117,786.54 = 36,948.68 : x
  2. Step 2: Convert to fraction form
    78,628.04/117,786.54 = 36,948.68/x
  3. Step 3: Cross multiply
    78,628.04x = 117,786.54 × 36,948.68
  4. Step 4: Simplify right side
    78,628.04x = 4,352,057,174.77
  5. Step 5: Solve for x
    x = 4,352,057,174.77/78,628.04
  6. Step 6: Final answer
    x = 55,349.94

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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.