Home / 60,165.48-90,247.20-20,721.72

Finding the Fourth Proportional to 60,165.48, 90,247.20 and 20,721.72

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Solution

The fourth proportional to 60,165.48, 90,247.20 and 20,721.72 is: 31,082.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,165.48 : 90,247.20 = 20,721.72 : x
  2. Step 2: Convert to fraction form
    60,165.48/90,247.20 = 20,721.72/x
  3. Step 3: Cross multiply
    60,165.48x = 90,247.20 × 20,721.72
  4. Step 4: Simplify right side
    60,165.48x = 1,870,077,209.18
  5. Step 5: Solve for x
    x = 1,870,077,209.18/60,165.48
  6. Step 6: Final answer
    x = 31,082.23

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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.