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Finding the Fourth Proportional to 85,044.76, 127,564.31 and 45,678.76

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Solution

The fourth proportional to 85,044.76, 127,564.31 and 45,678.76 is: 68,516.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,044.76 : 127,564.31 = 45,678.76 : x
  2. Step 2: Convert to fraction form
    85,044.76/127,564.31 = 45,678.76/x
  3. Step 3: Cross multiply
    85,044.76x = 127,564.31 × 45,678.76
  4. Step 4: Simplify right side
    85,044.76x = 5,826,979,272.66
  5. Step 5: Solve for x
    x = 5,826,979,272.66/85,044.76
  6. Step 6: Final answer
    x = 68,516.62

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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.