Home / 72,136.46-99,546.45-40,305.58

Finding the Fourth Proportional to 72,136.46, 99,546.45 and 40,305.58

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Solution

The fourth proportional to 72,136.46, 99,546.45 and 40,305.58 is: 55,620.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,136.46 : 99,546.45 = 40,305.58 : x
  2. Step 2: Convert to fraction form
    72,136.46/99,546.45 = 40,305.58/x
  3. Step 3: Cross multiply
    72,136.46x = 99,546.45 × 40,305.58
  4. Step 4: Simplify right side
    72,136.46x = 4,012,277,404.19
  5. Step 5: Solve for x
    x = 4,012,277,404.19/72,136.46
  6. Step 6: Final answer
    x = 55,620.66

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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.