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Finding the Fourth Proportional to 81,808.64, 112,895.36 and 46,480.64

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Solution

The fourth proportional to 81,808.64, 112,895.36 and 46,480.64 is: 64,142.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,808.64 : 112,895.36 = 46,480.64 : x
  2. Step 2: Convert to fraction form
    81,808.64/112,895.36 = 46,480.64/x
  3. Step 3: Cross multiply
    81,808.64x = 112,895.36 × 46,480.64
  4. Step 4: Simplify right side
    81,808.64x = 5,247,448,585.83
  5. Step 5: Solve for x
    x = 5,247,448,585.83/81,808.64
  6. Step 6: Final answer
    x = 64,142.96

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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.