Home / 78,253.12-117,321.32-47,081.12

Finding the Fourth Proportional to 78,253.12, 117,321.32 and 47,081.12

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Solution

The fourth proportional to 78,253.12, 117,321.32 and 47,081.12 is: 70,586.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,253.12 : 117,321.32 = 47,081.12 : x
  2. Step 2: Convert to fraction form
    78,253.12/117,321.32 = 47,081.12/x
  3. Step 3: Cross multiply
    78,253.12x = 117,321.32 × 47,081.12
  4. Step 4: Simplify right side
    78,253.12x = 5,523,619,145.48
  5. Step 5: Solve for x
    x = 5,523,619,145.48/78,253.12
  6. Step 6: Final answer
    x = 70,586.57

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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.