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Finding the Fourth Proportional to 145,855.88, 218,820.72 and 40,674.86

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Solution

The fourth proportional to 145,855.88, 218,820.72 and 40,674.86 is: 61,022.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,855.88 : 218,820.72 = 40,674.86 : x
  2. Step 2: Convert to fraction form
    145,855.88/218,820.72 = 40,674.86/x
  3. Step 3: Cross multiply
    145,855.88x = 218,820.72 × 40,674.86
  4. Step 4: Simplify right side
    145,855.88x = 8,900,502,151.10
  5. Step 5: Solve for x
    x = 8,900,502,151.10/145,855.88
  6. Step 6: Final answer
    x = 61,022.58

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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.