Home / 78,782.39-118,138.04-22,609.75

Finding the Fourth Proportional to 78,782.39, 118,138.04 and 22,609.75

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Solution

The fourth proportional to 78,782.39, 118,138.04 and 22,609.75 is: 33,904.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,782.39 : 118,138.04 = 22,609.75 : x
  2. Step 2: Convert to fraction form
    78,782.39/118,138.04 = 22,609.75/x
  3. Step 3: Cross multiply
    78,782.39x = 118,138.04 × 22,609.75
  4. Step 4: Simplify right side
    78,782.39x = 2,671,071,549.89
  5. Step 5: Solve for x
    x = 2,671,071,549.89/78,782.39
  6. Step 6: Final answer
    x = 33,904.42

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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.