Home / 78,244.17-117,336.78-28,311.92

Finding the Fourth Proportional to 78,244.17, 117,336.78 and 28,311.92

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Solution

The fourth proportional to 78,244.17, 117,336.78 and 28,311.92 is: 42,457.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,244.17 : 117,336.78 = 28,311.92 : x
  2. Step 2: Convert to fraction form
    78,244.17/117,336.78 = 28,311.92/x
  3. Step 3: Cross multiply
    78,244.17x = 117,336.78 × 28,311.92
  4. Step 4: Simplify right side
    78,244.17x = 3,322,029,528.42
  5. Step 5: Solve for x
    x = 3,322,029,528.42/78,244.17
  6. Step 6: Final answer
    x = 42,457.21

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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.