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Finding the Fourth Proportional to 69,798.45, 96,305.57 and 40,722.28

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Solution

The fourth proportional to 69,798.45, 96,305.57 and 40,722.28 is: 56,187.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,798.45 : 96,305.57 = 40,722.28 : x
  2. Step 2: Convert to fraction form
    69,798.45/96,305.57 = 40,722.28/x
  3. Step 3: Cross multiply
    69,798.45x = 96,305.57 × 40,722.28
  4. Step 4: Simplify right side
    69,798.45x = 3,921,782,558.99
  5. Step 5: Solve for x
    x = 3,921,782,558.99/69,798.45
  6. Step 6: Final answer
    x = 56,187.25

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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.