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Finding the Fourth Proportional to 145,855.82, 218,820.62 and 40,674.80

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Solution

The fourth proportional to 145,855.82, 218,820.62 and 40,674.80 is: 61,022.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,855.82 : 218,820.62 = 40,674.80 : x
  2. Step 2: Convert to fraction form
    145,855.82/218,820.62 = 40,674.80/x
  3. Step 3: Cross multiply
    145,855.82x = 218,820.62 × 40,674.80
  4. Step 4: Simplify right side
    145,855.82x = 8,900,483,860.27
  5. Step 5: Solve for x
    x = 8,900,483,860.27/145,855.82
  6. Step 6: Final answer
    x = 61,022.48

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1.5x scale

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.