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Finding the Fourth Proportional to 60,313.20, 90,469.80 and 42,817.20

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Solution

The fourth proportional to 60,313.20, 90,469.80 and 42,817.20 is: 64,225.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,313.20 : 90,469.80 = 42,817.20 : x
  2. Step 2: Convert to fraction form
    60,313.20/90,469.80 = 42,817.20/x
  3. Step 3: Cross multiply
    60,313.20x = 90,469.80 × 42,817.20
  4. Step 4: Simplify right side
    60,313.20x = 3,873,663,520.56
  5. Step 5: Solve for x
    x = 3,873,663,520.56/60,313.20
  6. Step 6: Final answer
    x = 64,225.80

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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.