Home / 72,643.32-100,236.87-40,806.12

Finding the Fourth Proportional to 72,643.32, 100,236.87 and 40,806.12

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Solution

The fourth proportional to 72,643.32, 100,236.87 and 40,806.12 is: 56,306.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,643.32 : 100,236.87 = 40,806.12 : x
  2. Step 2: Convert to fraction form
    72,643.32/100,236.87 = 40,806.12/x
  3. Step 3: Cross multiply
    72,643.32x = 100,236.87 × 40,806.12
  4. Step 4: Simplify right side
    72,643.32x = 4,090,277,745.64
  5. Step 5: Solve for x
    x = 4,090,277,745.64/72,643.32
  6. Step 6: Final answer
    x = 56,306.32

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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.