Home / 72,222.28-99,670.62-40,389.28

Finding the Fourth Proportional to 72,222.28, 99,670.62 and 40,389.28

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Solution

The fourth proportional to 72,222.28, 99,670.62 and 40,389.28 is: 55,739.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,222.28 : 99,670.62 = 40,389.28 : x
  2. Step 2: Convert to fraction form
    72,222.28/99,670.62 = 40,389.28/x
  3. Step 3: Cross multiply
    72,222.28x = 99,670.62 × 40,389.28
  4. Step 4: Simplify right side
    72,222.28x = 4,025,624,578.95
  5. Step 5: Solve for x
    x = 4,025,624,578.95/72,222.28
  6. Step 6: Final answer
    x = 55,739.37

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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.