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Finding the Fourth Proportional to 45,043, 67,563.96 and 42,302.78

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Solution

The fourth proportional to 45,043, 67,563.96 and 42,302.78 is: 63,453.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,043 : 67,563.96 = 42,302.78 : x
  2. Step 2: Convert to fraction form
    45,043/67,563.96 = 42,302.78/x
  3. Step 3: Cross multiply
    45,043x = 67,563.96 × 42,302.78
  4. Step 4: Simplify right side
    45,043x = 2,858,143,335.81
  5. Step 5: Solve for x
    x = 2,858,143,335.81/45,043
  6. Step 6: Final answer
    x = 63,453.66

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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.