Home / 72,718.04-109,079.44-20,123.12

Finding the Fourth Proportional to 72,718.04, 109,079.44 and 20,123.12

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Solution

The fourth proportional to 72,718.04, 109,079.44 and 20,123.12 is: 30,185.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,718.04 : 109,079.44 = 20,123.12 : x
  2. Step 2: Convert to fraction form
    72,718.04/109,079.44 = 20,123.12/x
  3. Step 3: Cross multiply
    72,718.04x = 109,079.44 × 20,123.12
  4. Step 4: Simplify right side
    72,718.04x = 2,195,018,064.95
  5. Step 5: Solve for x
    x = 2,195,018,064.95/72,718.04
  6. Step 6: Final answer
    x = 30,185.33

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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.