Home / 78,318.42-117,477.62-74,972.31

Finding the Fourth Proportional to 78,318.42, 117,477.62 and 74,972.31

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Solution

The fourth proportional to 78,318.42, 117,477.62 and 74,972.31 is: 112,458.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,318.42 : 117,477.62 = 74,972.31 : x
  2. Step 2: Convert to fraction form
    78,318.42/117,477.62 = 74,972.31/x
  3. Step 3: Cross multiply
    78,318.42x = 117,477.62 × 74,972.31
  4. Step 4: Simplify right side
    78,318.42x = 8,807,568,544.70
  5. Step 5: Solve for x
    x = 8,807,568,544.70/78,318.42
  6. Step 6: Final answer
    x = 112,458.46

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1.5x scale

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.