Home / 47,982.72-66,187.12-30,960.32

Finding the Fourth Proportional to 47,982.72, 66,187.12 and 30,960.32

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Solution

The fourth proportional to 47,982.72, 66,187.12 and 30,960.32 is: 42,706.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,982.72 : 66,187.12 = 30,960.32 : x
  2. Step 2: Convert to fraction form
    47,982.72/66,187.12 = 30,960.32/x
  3. Step 3: Cross multiply
    47,982.72x = 66,187.12 × 30,960.32
  4. Step 4: Simplify right side
    47,982.72x = 2,049,174,415.08
  5. Step 5: Solve for x
    x = 2,049,174,415.08/47,982.72
  6. Step 6: Final answer
    x = 42,706.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.