Home / 78,291.96-117,286.77-46,727.20

Finding the Fourth Proportional to 78,291.96, 117,286.77 and 46,727.20

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Solution

The fourth proportional to 78,291.96, 117,286.77 and 46,727.20 is: 70,000.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,291.96 : 117,286.77 = 46,727.20 : x
  2. Step 2: Convert to fraction form
    78,291.96/117,286.77 = 46,727.20/x
  3. Step 3: Cross multiply
    78,291.96x = 117,286.77 × 46,727.20
  4. Step 4: Simplify right side
    78,291.96x = 5,480,482,359.14
  5. Step 5: Solve for x
    x = 5,480,482,359.14/78,291.96
  6. Step 6: Final answer
    x = 70,000.58

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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.