Home / 72,228.38-99,680.26-40,400.24

Finding the Fourth Proportional to 72,228.38, 99,680.26 and 40,400.24

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Solution

The fourth proportional to 72,228.38, 99,680.26 and 40,400.24 is: 55,755.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,228.38 : 99,680.26 = 40,400.24 : x
  2. Step 2: Convert to fraction form
    72,228.38/99,680.26 = 40,400.24/x
  3. Step 3: Cross multiply
    72,228.38x = 99,680.26 × 40,400.24
  4. Step 4: Simplify right side
    72,228.38x = 4,027,106,427.26
  5. Step 5: Solve for x
    x = 4,027,106,427.26/72,228.38
  6. Step 6: Final answer
    x = 55,755.18

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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.