Home / 74,512.20-111,768.30-61,379.40

Finding the Fourth Proportional to 74,512.20, 111,768.30 and 61,379.40

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Solution

The fourth proportional to 74,512.20, 111,768.30 and 61,379.40 is: 92,069.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,512.20 : 111,768.30 = 61,379.40 : x
  2. Step 2: Convert to fraction form
    74,512.20/111,768.30 = 61,379.40/x
  3. Step 3: Cross multiply
    74,512.20x = 111,768.30 × 61,379.40
  4. Step 4: Simplify right side
    74,512.20x = 6,860,271,193.02
  5. Step 5: Solve for x
    x = 6,860,271,193.02/74,512.20
  6. Step 6: Final answer
    x = 92,069.10

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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.