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Finding the Fourth Proportional to 145,855.69, 218,820.44 and 40,674.66

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Solution

The fourth proportional to 145,855.69, 218,820.44 and 40,674.66 is: 61,022.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,855.69 : 218,820.44 = 40,674.66 : x
  2. Step 2: Convert to fraction form
    145,855.69/218,820.44 = 40,674.66/x
  3. Step 3: Cross multiply
    145,855.69x = 218,820.44 × 40,674.66
  4. Step 4: Simplify right side
    145,855.69x = 8,900,446,050.37
  5. Step 5: Solve for x
    x = 8,900,446,050.37/145,855.69
  6. Step 6: Final answer
    x = 61,022.28

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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.