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Finding the Fourth Proportional to 60,349.40, 90,524.10 and 20,907.80

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Solution

The fourth proportional to 60,349.40, 90,524.10 and 20,907.80 is: 31,361.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,349.40 : 90,524.10 = 20,907.80 : x
  2. Step 2: Convert to fraction form
    60,349.40/90,524.10 = 20,907.80/x
  3. Step 3: Cross multiply
    60,349.40x = 90,524.10 × 20,907.80
  4. Step 4: Simplify right side
    60,349.40x = 1,892,659,777.98
  5. Step 5: Solve for x
    x = 1,892,659,777.98/60,349.40
  6. Step 6: Final answer
    x = 31,361.70

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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.