Home / 99,634.60-149,322.30-40,421.80

Finding the Fourth Proportional to 99,634.60, 149,322.30 and 40,421.80

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Solution

The fourth proportional to 99,634.60, 149,322.30 and 40,421.80 is: 60,580.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,634.60 : 149,322.30 = 40,421.80 : x
  2. Step 2: Convert to fraction form
    99,634.60/149,322.30 = 40,421.80/x
  3. Step 3: Cross multiply
    99,634.60x = 149,322.30 × 40,421.80
  4. Step 4: Simplify right side
    99,634.60x = 6,035,876,146.14
  5. Step 5: Solve for x
    x = 6,035,876,146.14/99,634.60
  6. Step 6: Final answer
    x = 60,580.12

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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.