Home / 78,965.39-118,530.12-45,750.35

Finding the Fourth Proportional to 78,965.39, 118,530.12 and 45,750.35

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Solution

The fourth proportional to 78,965.39, 118,530.12 and 45,750.35 is: 68,673.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,965.39 : 118,530.12 = 45,750.35 : x
  2. Step 2: Convert to fraction form
    78,965.39/118,530.12 = 45,750.35/x
  3. Step 3: Cross multiply
    78,965.39x = 118,530.12 × 45,750.35
  4. Step 4: Simplify right side
    78,965.39x = 5,422,794,475.54
  5. Step 5: Solve for x
    x = 5,422,794,475.54/78,965.39
  6. Step 6: Final answer
    x = 68,673.05

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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.