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Finding the Fourth Proportional to 81,813.76, 112,900.44 and 46,005.28

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Solution

The fourth proportional to 81,813.76, 112,900.44 and 46,005.28 is: 63,485.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,813.76 : 112,900.44 = 46,005.28 : x
  2. Step 2: Convert to fraction form
    81,813.76/112,900.44 = 46,005.28/x
  3. Step 3: Cross multiply
    81,813.76x = 112,900.44 × 46,005.28
  4. Step 4: Simplify right side
    81,813.76x = 5,194,016,354.32
  5. Step 5: Solve for x
    x = 5,194,016,354.32/81,813.76
  6. Step 6: Final answer
    x = 63,485.85

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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.