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Finding the Fourth Proportional to 72,618.86, 100,192.34 and 43,949.12

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Solution

The fourth proportional to 72,618.86, 100,192.34 and 43,949.12 is: 60,636.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,618.86 : 100,192.34 = 43,949.12 : x
  2. Step 2: Convert to fraction form
    72,618.86/100,192.34 = 43,949.12/x
  3. Step 3: Cross multiply
    72,618.86x = 100,192.34 × 43,949.12
  4. Step 4: Simplify right side
    72,618.86x = 4,403,364,782.65
  5. Step 5: Solve for x
    x = 4,403,364,782.65/72,618.86
  6. Step 6: Final answer
    x = 60,636.65

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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.