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Finding the Fourth Proportional to 67,970.80, 101,907.60 and 30,500.20

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Solution

The fourth proportional to 67,970.80, 101,907.60 and 30,500.20 is: 45,728.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,970.80 : 101,907.60 = 30,500.20 : x
  2. Step 2: Convert to fraction form
    67,970.80/101,907.60 = 30,500.20/x
  3. Step 3: Cross multiply
    67,970.80x = 101,907.60 × 30,500.20
  4. Step 4: Simplify right side
    67,970.80x = 3,108,202,181.52
  5. Step 5: Solve for x
    x = 3,108,202,181.52/67,970.80
  6. Step 6: Final answer
    x = 45,728.49

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1.5x scale

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.