Home / 60,231.48-90,359.34-20,790.12

Finding the Fourth Proportional to 60,231.48, 90,359.34 and 20,790.12

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Solution

The fourth proportional to 60,231.48, 90,359.34 and 20,790.12 is: 31,189.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,231.48 : 90,359.34 = 20,790.12 : x
  2. Step 2: Convert to fraction form
    60,231.48/90,359.34 = 20,790.12/x
  3. Step 3: Cross multiply
    60,231.48x = 90,359.34 × 20,790.12
  4. Step 4: Simplify right side
    60,231.48x = 1,878,581,521.72
  5. Step 5: Solve for x
    x = 1,878,581,521.72/60,231.48
  6. Step 6: Final answer
    x = 31,189.36

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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.