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Finding the Fourth Proportional to 81,737.44, 112,797.30 and 45,438.64

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Solution

The fourth proportional to 81,737.44, 112,797.30 and 45,438.64 is: 62,705.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,737.44 : 112,797.30 = 45,438.64 : x
  2. Step 2: Convert to fraction form
    81,737.44/112,797.30 = 45,438.64/x
  3. Step 3: Cross multiply
    81,737.44x = 112,797.30 × 45,438.64
  4. Step 4: Simplify right side
    81,737.44x = 5,125,355,907.67
  5. Step 5: Solve for x
    x = 5,125,355,907.67/81,737.44
  6. Step 6: Final answer
    x = 62,705.12

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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.