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Finding the Fourth Proportional to 78,157.75, 107,856.28 and 44,165.50

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Solution

The fourth proportional to 78,157.75, 107,856.28 and 44,165.50 is: 60,947.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,157.75 : 107,856.28 = 44,165.50 : x
  2. Step 2: Convert to fraction form
    78,157.75/107,856.28 = 44,165.50/x
  3. Step 3: Cross multiply
    78,157.75x = 107,856.28 × 44,165.50
  4. Step 4: Simplify right side
    78,157.75x = 4,763,526,534.34
  5. Step 5: Solve for x
    x = 4,763,526,534.34/78,157.75
  6. Step 6: Final answer
    x = 60,947.59

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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.