Home / 72,301.68-99,785.72-40,477.19

Finding the Fourth Proportional to 72,301.68, 99,785.72 and 40,477.19

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Solution

The fourth proportional to 72,301.68, 99,785.72 and 40,477.19 is: 55,863.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,301.68 : 99,785.72 = 40,477.19 : x
  2. Step 2: Convert to fraction form
    72,301.68/99,785.72 = 40,477.19/x
  3. Step 3: Cross multiply
    72,301.68x = 99,785.72 × 40,477.19
  4. Step 4: Simplify right side
    72,301.68x = 4,039,045,149.99
  5. Step 5: Solve for x
    x = 4,039,045,149.99/72,301.68
  6. Step 6: Final answer
    x = 55,863.78

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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.