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Finding the Fourth Proportional to 82,893.60, 124,394.85 and 45,479.88

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Solution

The fourth proportional to 82,893.60, 124,394.85 and 45,479.88 is: 68,249.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,893.60 : 124,394.85 = 45,479.88 : x
  2. Step 2: Convert to fraction form
    82,893.60/124,394.85 = 45,479.88/x
  3. Step 3: Cross multiply
    82,893.60x = 124,394.85 × 45,479.88
  4. Step 4: Simplify right side
    82,893.60x = 5,657,462,850.62
  5. Step 5: Solve for x
    x = 5,657,462,850.62/82,893.60
  6. Step 6: Final answer
    x = 68,249.69

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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.