Home / 72,228.30-99,674.31-40,397.12

Finding the Fourth Proportional to 72,228.30, 99,674.31 and 40,397.12

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Solution

The fourth proportional to 72,228.30, 99,674.31 and 40,397.12 is: 55,747.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,228.30 : 99,674.31 = 40,397.12 : x
  2. Step 2: Convert to fraction form
    72,228.30/99,674.31 = 40,397.12/x
  3. Step 3: Cross multiply
    72,228.30x = 99,674.31 × 40,397.12
  4. Step 4: Simplify right side
    72,228.30x = 4,026,555,061.99
  5. Step 5: Solve for x
    x = 4,026,555,061.99/72,228.30
  6. Step 6: Final answer
    x = 55,747.61

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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.