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Finding the Fourth Proportional to 145,762.72, 218,640.24 and 40,588.96

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Solution

The fourth proportional to 145,762.72, 218,640.24 and 40,588.96 is: 60,882.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,762.72 : 218,640.24 = 40,588.96 : x
  2. Step 2: Convert to fraction form
    145,762.72/218,640.24 = 40,588.96/x
  3. Step 3: Cross multiply
    145,762.72x = 218,640.24 × 40,588.96
  4. Step 4: Simplify right side
    145,762.72x = 8,874,379,955.75
  5. Step 5: Solve for x
    x = 8,874,379,955.75/145,762.72
  6. Step 6: Final answer
    x = 60,882.37

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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.