Home / 78,562.20-117,994.50-67,343.16

Finding the Fourth Proportional to 78,562.20, 117,994.50 and 67,343.16

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Solution

The fourth proportional to 78,562.20, 117,994.50 and 67,343.16 is: 101,144.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,562.20 : 117,994.50 = 67,343.16 : x
  2. Step 2: Convert to fraction form
    78,562.20/117,994.50 = 67,343.16/x
  3. Step 3: Cross multiply
    78,562.20x = 117,994.50 × 67,343.16
  4. Step 4: Simplify right side
    78,562.20x = 7,946,122,492.62
  5. Step 5: Solve for x
    x = 7,946,122,492.62/78,562.20
  6. Step 6: Final answer
    x = 101,144.35

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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.