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Finding the Fourth Proportional to 72,294.48, 99,765.41 and 40,463.37

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Solution

The fourth proportional to 72,294.48, 99,765.41 and 40,463.37 is: 55,838.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,294.48 : 99,765.41 = 40,463.37 : x
  2. Step 2: Convert to fraction form
    72,294.48/99,765.41 = 40,463.37/x
  3. Step 3: Cross multiply
    72,294.48x = 99,765.41 × 40,463.37
  4. Step 4: Simplify right side
    72,294.48x = 4,036,844,495.71
  5. Step 5: Solve for x
    x = 4,036,844,495.71/72,294.48
  6. Step 6: Final answer
    x = 55,838.90

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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.