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Finding the Fourth Proportional to 72,230.47, 108,328.69 and 40,653.97

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Solution

The fourth proportional to 72,230.47, 108,328.69 and 40,653.97 is: 60,971.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,230.47 : 108,328.69 = 40,653.97 : x
  2. Step 2: Convert to fraction form
    72,230.47/108,328.69 = 40,653.97/x
  3. Step 3: Cross multiply
    72,230.47x = 108,328.69 × 40,653.97
  4. Step 4: Simplify right side
    72,230.47x = 4,403,991,093.40
  5. Step 5: Solve for x
    x = 4,403,991,093.40/72,230.47
  6. Step 6: Final answer
    x = 60,971.38

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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.