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Finding the Fourth Proportional to 47,337.40, 70,919.70 and 28,847.80

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Solution

The fourth proportional to 47,337.40, 70,919.70 and 28,847.80 is: 43,219.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,337.40 : 70,919.70 = 28,847.80 : x
  2. Step 2: Convert to fraction form
    47,337.40/70,919.70 = 28,847.80/x
  3. Step 3: Cross multiply
    47,337.40x = 70,919.70 × 28,847.80
  4. Step 4: Simplify right side
    47,337.40x = 2,045,877,321.66
  5. Step 5: Solve for x
    x = 2,045,877,321.66/47,337.40
  6. Step 6: Final answer
    x = 43,219.05

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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.