Home / 78,884.15-118,383.32-30,859.84

Finding the Fourth Proportional to 78,884.15, 118,383.32 and 30,859.84

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Solution

The fourth proportional to 78,884.15, 118,383.32 and 30,859.84 is: 46,312.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,884.15 : 118,383.32 = 30,859.84 : x
  2. Step 2: Convert to fraction form
    78,884.15/118,383.32 = 30,859.84/x
  3. Step 3: Cross multiply
    78,884.15x = 118,383.32 × 30,859.84
  4. Step 4: Simplify right side
    78,884.15x = 3,653,290,095.06
  5. Step 5: Solve for x
    x = 3,653,290,095.06/78,884.15
  6. Step 6: Final answer
    x = 46,312.09

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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.