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Finding the Fourth Proportional to 78,558.67, 117,856.46 and 25,968.16

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Solution

The fourth proportional to 78,558.67, 117,856.46 and 25,968.16 is: 38,958.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,558.67 : 117,856.46 = 25,968.16 : x
  2. Step 2: Convert to fraction form
    78,558.67/117,856.46 = 25,968.16/x
  3. Step 3: Cross multiply
    78,558.67x = 117,856.46 × 25,968.16
  4. Step 4: Simplify right side
    78,558.67x = 3,060,515,410.31
  5. Step 5: Solve for x
    x = 3,060,515,410.31/78,558.67
  6. Step 6: Final answer
    x = 38,958.34

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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.