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Finding the Fourth Proportional to 92,911.44, 128,218.32 and 50,470.32

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Solution

The fourth proportional to 92,911.44, 128,218.32 and 50,470.32 is: 69,649.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,911.44 : 128,218.32 = 50,470.32 : x
  2. Step 2: Convert to fraction form
    92,911.44/128,218.32 = 50,470.32/x
  3. Step 3: Cross multiply
    92,911.44x = 128,218.32 × 50,470.32
  4. Step 4: Simplify right side
    92,911.44x = 6,471,219,640.26
  5. Step 5: Solve for x
    x = 6,471,219,640.26/92,911.44
  6. Step 6: Final answer
    x = 69,649.33

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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.