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Finding the Fourth Proportional to 81,475.96, 112,268.28 and 65,496.28

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Solution

The fourth proportional to 81,475.96, 112,268.28 and 65,496.28 is: 90,249.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,475.96 : 112,268.28 = 65,496.28 : x
  2. Step 2: Convert to fraction form
    81,475.96/112,268.28 = 65,496.28/x
  3. Step 3: Cross multiply
    81,475.96x = 112,268.28 × 65,496.28
  4. Step 4: Simplify right side
    81,475.96x = 7,353,154,702.00
  5. Step 5: Solve for x
    x = 7,353,154,702.00/81,475.96
  6. Step 6: Final answer
    x = 90,249.38

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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.