Home / 72,136.14-99,546.02-40,305.28

Finding the Fourth Proportional to 72,136.14, 99,546.02 and 40,305.28

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Solution

The fourth proportional to 72,136.14, 99,546.02 and 40,305.28 is: 55,620.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,136.14 : 99,546.02 = 40,305.28 : x
  2. Step 2: Convert to fraction form
    72,136.14/99,546.02 = 40,305.28/x
  3. Step 3: Cross multiply
    72,136.14x = 99,546.02 × 40,305.28
  4. Step 4: Simplify right side
    72,136.14x = 4,012,230,208.99
  5. Step 5: Solve for x
    x = 4,012,230,208.99/72,136.14
  6. Step 6: Final answer
    x = 55,620.25

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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.