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Finding the Fourth Proportional to 85,843.84, 128,746.08 and 23,519.20

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Solution

The fourth proportional to 85,843.84, 128,746.08 and 23,519.20 is: 35,273.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,843.84 : 128,746.08 = 23,519.20 : x
  2. Step 2: Convert to fraction form
    85,843.84/128,746.08 = 23,519.20/x
  3. Step 3: Cross multiply
    85,843.84x = 128,746.08 × 23,519.20
  4. Step 4: Simplify right side
    85,843.84x = 3,028,004,804.74
  5. Step 5: Solve for x
    x = 3,028,004,804.74/85,843.84
  6. Step 6: Final answer
    x = 35,273.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.