Home / 78,110.34-117,170.97-31,363.23

Finding the Fourth Proportional to 78,110.34, 117,170.97 and 31,363.23

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Solution

The fourth proportional to 78,110.34, 117,170.97 and 31,363.23 is: 47,047.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,110.34 : 117,170.97 = 31,363.23 : x
  2. Step 2: Convert to fraction form
    78,110.34/117,170.97 = 31,363.23/x
  3. Step 3: Cross multiply
    78,110.34x = 117,170.97 × 31,363.23
  4. Step 4: Simplify right side
    78,110.34x = 3,674,860,081.43
  5. Step 5: Solve for x
    x = 3,674,860,081.43/78,110.34
  6. Step 6: Final answer
    x = 47,047.04

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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.