Home / 78,816.25-118,287.41-41,398.38

Finding the Fourth Proportional to 78,816.25, 118,287.41 and 41,398.38

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Solution

The fourth proportional to 78,816.25, 118,287.41 and 41,398.38 is: 62,130.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,816.25 : 118,287.41 = 41,398.38 : x
  2. Step 2: Convert to fraction form
    78,816.25/118,287.41 = 41,398.38/x
  3. Step 3: Cross multiply
    78,816.25x = 118,287.41 × 41,398.38
  4. Step 4: Simplify right side
    78,816.25x = 4,896,907,148.40
  5. Step 5: Solve for x
    x = 4,896,907,148.40/78,816.25
  6. Step 6: Final answer
    x = 62,130.68

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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.