Home / 78,251.12-117,318.32-47,079.12

Finding the Fourth Proportional to 78,251.12, 117,318.32 and 47,079.12

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Solution

The fourth proportional to 78,251.12, 117,318.32 and 47,079.12 is: 70,583.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,251.12 : 117,318.32 = 47,079.12 : x
  2. Step 2: Convert to fraction form
    78,251.12/117,318.32 = 47,079.12/x
  3. Step 3: Cross multiply
    78,251.12x = 117,318.32 × 47,079.12
  4. Step 4: Simplify right side
    78,251.12x = 5,523,243,265.48
  5. Step 5: Solve for x
    x = 5,523,243,265.48/78,251.12
  6. Step 6: Final answer
    x = 70,583.57

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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.