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Finding the Fourth Proportional to 82,865.94, 124,298.84 and 20,536.44

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Solution

The fourth proportional to 82,865.94, 124,298.84 and 20,536.44 is: 30,804.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,865.94 : 124,298.84 = 20,536.44 : x
  2. Step 2: Convert to fraction form
    82,865.94/124,298.84 = 20,536.44/x
  3. Step 3: Cross multiply
    82,865.94x = 124,298.84 × 20,536.44
  4. Step 4: Simplify right side
    82,865.94x = 2,552,655,567.05
  5. Step 5: Solve for x
    x = 2,552,655,567.05/82,865.94
  6. Step 6: Final answer
    x = 30,804.64

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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.