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Finding the Fourth Proportional to 72,283.61, 99,750.49 and 40,452.77

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Solution

The fourth proportional to 72,283.61, 99,750.49 and 40,452.77 is: 55,824.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,283.61 : 99,750.49 = 40,452.77 : x
  2. Step 2: Convert to fraction form
    72,283.61/99,750.49 = 40,452.77/x
  3. Step 3: Cross multiply
    72,283.61x = 99,750.49 × 40,452.77
  4. Step 4: Simplify right side
    72,283.61x = 4,035,183,777.60
  5. Step 5: Solve for x
    x = 4,035,183,777.60/72,283.61
  6. Step 6: Final answer
    x = 55,824.32

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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.