Home / 47,987.24-66,209.10-30,992.20

Finding the Fourth Proportional to 47,987.24, 66,209.10 and 30,992.20

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Solution

The fourth proportional to 47,987.24, 66,209.10 and 30,992.20 is: 42,760.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,987.24 : 66,209.10 = 30,992.20 : x
  2. Step 2: Convert to fraction form
    47,987.24/66,209.10 = 30,992.20/x
  3. Step 3: Cross multiply
    47,987.24x = 66,209.10 × 30,992.20
  4. Step 4: Simplify right side
    47,987.24x = 2,051,965,669.02
  5. Step 5: Solve for x
    x = 2,051,965,669.02/47,987.24
  6. Step 6: Final answer
    x = 42,760.65

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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.