Home / 72,275.28-99,745.74-40,447.14

Finding the Fourth Proportional to 72,275.28, 99,745.74 and 40,447.14

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Solution

The fourth proportional to 72,275.28, 99,745.74 and 40,447.14 is: 55,820.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,275.28 : 99,745.74 = 40,447.14 : x
  2. Step 2: Convert to fraction form
    72,275.28/99,745.74 = 40,447.14/x
  3. Step 3: Cross multiply
    72,275.28x = 99,745.74 × 40,447.14
  4. Step 4: Simplify right side
    72,275.28x = 4,034,429,910.18
  5. Step 5: Solve for x
    x = 4,034,429,910.18/72,275.28
  6. Step 6: Final answer
    x = 55,820.33

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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.