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Finding the Fourth Proportional to 70,259.86, 105,368.52 and 36,961.56

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Solution

The fourth proportional to 70,259.86, 105,368.52 and 36,961.56 is: 55,431.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,259.86 : 105,368.52 = 36,961.56 : x
  2. Step 2: Convert to fraction form
    70,259.86/105,368.52 = 36,961.56/x
  3. Step 3: Cross multiply
    70,259.86x = 105,368.52 × 36,961.56
  4. Step 4: Simplify right side
    70,259.86x = 3,894,584,874.09
  5. Step 5: Solve for x
    x = 3,894,584,874.09/70,259.86
  6. Step 6: Final answer
    x = 55,431.15

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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.