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Finding the Fourth Proportional to 91,181.14, 125,830.12 and 50,894.90

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Solution

The fourth proportional to 91,181.14, 125,830.12 and 50,894.90 is: 70,235.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,181.14 : 125,830.12 = 50,894.90 : x
  2. Step 2: Convert to fraction form
    91,181.14/125,830.12 = 50,894.90/x
  3. Step 3: Cross multiply
    91,181.14x = 125,830.12 × 50,894.90
  4. Step 4: Simplify right side
    91,181.14x = 6,404,111,374.39
  5. Step 5: Solve for x
    x = 6,404,111,374.39/91,181.14
  6. Step 6: Final answer
    x = 70,235.04

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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.