Home / 78,530.16-117,796.49-19,365.85

Finding the Fourth Proportional to 78,530.16, 117,796.49 and 19,365.85

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Solution

The fourth proportional to 78,530.16, 117,796.49 and 19,365.85 is: 29,049.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,530.16 : 117,796.49 = 19,365.85 : x
  2. Step 2: Convert to fraction form
    78,530.16/117,796.49 = 19,365.85/x
  3. Step 3: Cross multiply
    78,530.16x = 117,796.49 × 19,365.85
  4. Step 4: Simplify right side
    78,530.16x = 2,281,229,155.87
  5. Step 5: Solve for x
    x = 2,281,229,155.87/78,530.16
  6. Step 6: Final answer
    x = 29,049.08

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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.