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Finding the Fourth Proportional to 72,933.48, 100,649.52 and 40,668.48

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Solution

The fourth proportional to 72,933.48, 100,649.52 and 40,668.48 is: 56,123.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,933.48 : 100,649.52 = 40,668.48 : x
  2. Step 2: Convert to fraction form
    72,933.48/100,649.52 = 40,668.48/x
  3. Step 3: Cross multiply
    72,933.48x = 100,649.52 × 40,668.48
  4. Step 4: Simplify right side
    72,933.48x = 4,093,262,991.13
  5. Step 5: Solve for x
    x = 4,093,262,991.13/72,933.48
  6. Step 6: Final answer
    x = 56,123.24

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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.