Home / 72,224.06-99,678.60-40,399.56

Finding the Fourth Proportional to 72,224.06, 99,678.60 and 40,399.56

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Solution

The fourth proportional to 72,224.06, 99,678.60 and 40,399.56 is: 55,756.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,224.06 : 99,678.60 = 40,399.56 : x
  2. Step 2: Convert to fraction form
    72,224.06/99,678.60 = 40,399.56/x
  3. Step 3: Cross multiply
    72,224.06x = 99,678.60 × 40,399.56
  4. Step 4: Simplify right side
    72,224.06x = 4,026,971,581.42
  5. Step 5: Solve for x
    x = 4,026,971,581.42/72,224.06
  6. Step 6: Final answer
    x = 55,756.65

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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.