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Finding the Fourth Proportional to 71,914.16, 107,892.28 and 36,878.32

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Solution

The fourth proportional to 71,914.16, 107,892.28 and 36,878.32 is: 55,328.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,914.16 : 107,892.28 = 36,878.32 : x
  2. Step 2: Convert to fraction form
    71,914.16/107,892.28 = 36,878.32/x
  3. Step 3: Cross multiply
    71,914.16x = 107,892.28 × 36,878.32
  4. Step 4: Simplify right side
    71,914.16x = 3,978,886,027.37
  5. Step 5: Solve for x
    x = 3,978,886,027.37/71,914.16
  6. Step 6: Final answer
    x = 55,328.27

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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.