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Finding the Fourth Proportional to 48,516.64, 66,945.03 and 28,091.42

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Solution

The fourth proportional to 48,516.64, 66,945.03 and 28,091.42 is: 38,761.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,516.64 : 66,945.03 = 28,091.42 : x
  2. Step 2: Convert to fraction form
    48,516.64/66,945.03 = 28,091.42/x
  3. Step 3: Cross multiply
    48,516.64x = 66,945.03 × 28,091.42
  4. Step 4: Simplify right side
    48,516.64x = 1,880,581,300.20
  5. Step 5: Solve for x
    x = 1,880,581,300.20/48,516.64
  6. Step 6: Final answer
    x = 38,761.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.