Home / 78,277.91-117,269.24-60,661.62

Finding the Fourth Proportional to 78,277.91, 117,269.24 and 60,661.62

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Solution

The fourth proportional to 78,277.91, 117,269.24 and 60,661.62 is: 90,878.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,277.91 : 117,269.24 = 60,661.62 : x
  2. Step 2: Convert to fraction form
    78,277.91/117,269.24 = 60,661.62/x
  3. Step 3: Cross multiply
    78,277.91x = 117,269.24 × 60,661.62
  4. Step 4: Simplify right side
    78,277.91x = 7,113,741,771.26
  5. Step 5: Solve for x
    x = 7,113,741,771.26/78,277.91
  6. Step 6: Final answer
    x = 90,878.03

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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.