Home / 72,151.06-99,566.54-40,320.22

Finding the Fourth Proportional to 72,151.06, 99,566.54 and 40,320.22

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Solution

The fourth proportional to 72,151.06, 99,566.54 and 40,320.22 is: 55,640.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,151.06 : 99,566.54 = 40,320.22 : x
  2. Step 2: Convert to fraction form
    72,151.06/99,566.54 = 40,320.22/x
  3. Step 3: Cross multiply
    72,151.06x = 99,566.54 × 40,320.22
  4. Step 4: Simplify right side
    72,151.06x = 4,014,544,797.44
  5. Step 5: Solve for x
    x = 4,014,544,797.44/72,151.06
  6. Step 6: Final answer
    x = 55,640.83

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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.