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Finding the Fourth Proportional to 85,297.50, 127,917.71 and 28,358.28

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Solution

The fourth proportional to 85,297.50, 127,917.71 and 28,358.28 is: 42,527.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,297.50 : 127,917.71 = 28,358.28 : x
  2. Step 2: Convert to fraction form
    85,297.50/127,917.71 = 28,358.28/x
  3. Step 3: Cross multiply
    85,297.50x = 127,917.71 × 28,358.28
  4. Step 4: Simplify right side
    85,297.50x = 3,627,526,237.14
  5. Step 5: Solve for x
    x = 3,627,526,237.14/85,297.50
  6. Step 6: Final answer
    x = 42,527.93

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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.