Home / 84,322.55-126,441.10-28,142.57

Finding the Fourth Proportional to 84,322.55, 126,441.10 and 28,142.57

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Solution

The fourth proportional to 84,322.55, 126,441.10 and 28,142.57 is: 42,199.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,322.55 : 126,441.10 = 28,142.57 : x
  2. Step 2: Convert to fraction form
    84,322.55/126,441.10 = 28,142.57/x
  3. Step 3: Cross multiply
    84,322.55x = 126,441.10 × 28,142.57
  4. Step 4: Simplify right side
    84,322.55x = 3,558,377,858.91
  5. Step 5: Solve for x
    x = 3,558,377,858.91/84,322.55
  6. Step 6: Final answer
    x = 42,199.60

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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.