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Finding the Fourth Proportional to 145,879.05, 218,855.48 and 40,697.94

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Solution

The fourth proportional to 145,879.05, 218,855.48 and 40,697.94 is: 61,057.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,879.05 : 218,855.48 = 40,697.94 : x
  2. Step 2: Convert to fraction form
    145,879.05/218,855.48 = 40,697.94/x
  3. Step 3: Cross multiply
    145,879.05x = 218,855.48 × 40,697.94
  4. Step 4: Simplify right side
    145,879.05x = 8,906,967,193.71
  5. Step 5: Solve for x
    x = 8,906,967,193.71/145,879.05
  6. Step 6: Final answer
    x = 61,057.21

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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.