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Finding the Fourth Proportional to 81,170.98, 112,015.62 and 45,360.98

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Solution

The fourth proportional to 81,170.98, 112,015.62 and 45,360.98 is: 62,597.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,170.98 : 112,015.62 = 45,360.98 : x
  2. Step 2: Convert to fraction form
    81,170.98/112,015.62 = 45,360.98/x
  3. Step 3: Cross multiply
    81,170.98x = 112,015.62 × 45,360.98
  4. Step 4: Simplify right side
    81,170.98x = 5,081,138,158.49
  5. Step 5: Solve for x
    x = 5,081,138,158.49/81,170.98
  6. Step 6: Final answer
    x = 62,597.97

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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.