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Finding the Fourth Proportional to 72,010.64, 99,369.96 and 45,152

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Solution

The fourth proportional to 72,010.64, 99,369.96 and 45,152 is: 62,306.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,010.64 : 99,369.96 = 45,152 : x
  2. Step 2: Convert to fraction form
    72,010.64/99,369.96 = 45,152/x
  3. Step 3: Cross multiply
    72,010.64x = 99,369.96 × 45,152
  4. Step 4: Simplify right side
    72,010.64x = 4,486,752,433.92
  5. Step 5: Solve for x
    x = 4,486,752,433.92/72,010.64
  6. Step 6: Final answer
    x = 62,306.80

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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.