Home / 78,464.64-117,697.68-55,880.04

Finding the Fourth Proportional to 78,464.64, 117,697.68 and 55,880.04

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Solution

The fourth proportional to 78,464.64, 117,697.68 and 55,880.04 is: 83,820.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,464.64 : 117,697.68 = 55,880.04 : x
  2. Step 2: Convert to fraction form
    78,464.64/117,697.68 = 55,880.04/x
  3. Step 3: Cross multiply
    78,464.64x = 117,697.68 × 55,880.04
  4. Step 4: Simplify right side
    78,464.64x = 6,576,951,066.31
  5. Step 5: Solve for x
    x = 6,576,951,066.31/78,464.64
  6. Step 6: Final answer
    x = 83,820.57

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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.