Home / 78,614.42-117,919.07-46,811.60

Finding the Fourth Proportional to 78,614.42, 117,919.07 and 46,811.60

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Solution

The fourth proportional to 78,614.42, 117,919.07 and 46,811.60 is: 70,215.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,614.42 : 117,919.07 = 46,811.60 : x
  2. Step 2: Convert to fraction form
    78,614.42/117,919.07 = 46,811.60/x
  3. Step 3: Cross multiply
    78,614.42x = 117,919.07 × 46,811.60
  4. Step 4: Simplify right side
    78,614.42x = 5,519,980,337.21
  5. Step 5: Solve for x
    x = 5,519,980,337.21/78,614.42
  6. Step 6: Final answer
    x = 70,215.88

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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.