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Finding the Fourth Proportional to 83,893.90, 115,790.16 and 48,108.10

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Solution

The fourth proportional to 83,893.90, 115,790.16 and 48,108.10 is: 66,398.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,893.90 : 115,790.16 = 48,108.10 : x
  2. Step 2: Convert to fraction form
    83,893.90/115,790.16 = 48,108.10/x
  3. Step 3: Cross multiply
    83,893.90x = 115,790.16 × 48,108.10
  4. Step 4: Simplify right side
    83,893.90x = 5,570,444,596.30
  5. Step 5: Solve for x
    x = 5,570,444,596.30/83,893.90
  6. Step 6: Final answer
    x = 66,398.68

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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.