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Finding the Fourth Proportional to 45,809.40, 68,757.30 and 28,313.40

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Solution

The fourth proportional to 45,809.40, 68,757.30 and 28,313.40 is: 42,496.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,809.40 : 68,757.30 = 28,313.40 : x
  2. Step 2: Convert to fraction form
    45,809.40/68,757.30 = 28,313.40/x
  3. Step 3: Cross multiply
    45,809.40x = 68,757.30 × 28,313.40
  4. Step 4: Simplify right side
    45,809.40x = 1,946,752,937.82
  5. Step 5: Solve for x
    x = 1,946,752,937.82/45,809.40
  6. Step 6: Final answer
    x = 42,496.80

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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.