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Finding the Fourth Proportional to 72,857.48, 109,320.78 and 43,333.52

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Solution

The fourth proportional to 72,857.48, 109,320.78 and 43,333.52 is: 65,020.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,857.48 : 109,320.78 = 43,333.52 : x
  2. Step 2: Convert to fraction form
    72,857.48/109,320.78 = 43,333.52/x
  3. Step 3: Cross multiply
    72,857.48x = 109,320.78 × 43,333.52
  4. Step 4: Simplify right side
    72,857.48x = 4,737,254,206.55
  5. Step 5: Solve for x
    x = 4,737,254,206.55/72,857.48
  6. Step 6: Final answer
    x = 65,020.84

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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.