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Finding the Fourth Proportional to 82,953.75, 124,431.08 and 20,624.25

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Solution

The fourth proportional to 82,953.75, 124,431.08 and 20,624.25 is: 30,936.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,953.75 : 124,431.08 = 20,624.25 : x
  2. Step 2: Convert to fraction form
    82,953.75/124,431.08 = 20,624.25/x
  3. Step 3: Cross multiply
    82,953.75x = 124,431.08 × 20,624.25
  4. Step 4: Simplify right side
    82,953.75x = 2,566,297,714.58
  5. Step 5: Solve for x
    x = 2,566,297,714.58/82,953.75
  6. Step 6: Final answer
    x = 30,936.49

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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.