Home / 47,987.23-66,243.62-30,999.76

Finding the Fourth Proportional to 47,987.23, 66,243.62 and 30,999.76

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Solution

The fourth proportional to 47,987.23, 66,243.62 and 30,999.76 is: 42,793.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,987.23 : 66,243.62 = 30,999.76 : x
  2. Step 2: Convert to fraction form
    47,987.23/66,243.62 = 30,999.76/x
  3. Step 3: Cross multiply
    47,987.23x = 66,243.62 × 30,999.76
  4. Step 4: Simplify right side
    47,987.23x = 2,053,536,321.53
  5. Step 5: Solve for x
    x = 2,053,536,321.53/47,987.23
  6. Step 6: Final answer
    x = 42,793.39

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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.