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Finding the Fourth Proportional to 80,134.58, 110,485.20 and 51,403.58

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Solution

The fourth proportional to 80,134.58, 110,485.20 and 51,403.58 is: 70,872.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,134.58 : 110,485.20 = 51,403.58 : x
  2. Step 2: Convert to fraction form
    80,134.58/110,485.20 = 51,403.58/x
  3. Step 3: Cross multiply
    80,134.58x = 110,485.20 × 51,403.58
  4. Step 4: Simplify right side
    80,134.58x = 5,679,334,817.02
  5. Step 5: Solve for x
    x = 5,679,334,817.02/80,134.58
  6. Step 6: Final answer
    x = 70,872.46

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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.