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Finding the Fourth Proportional to 81,745.50, 112,807.80 and 45,941.58

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Solution

The fourth proportional to 81,745.50, 112,807.80 and 45,941.58 is: 63,398.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,745.50 : 112,807.80 = 45,941.58 : x
  2. Step 2: Convert to fraction form
    81,745.50/112,807.80 = 45,941.58/x
  3. Step 3: Cross multiply
    81,745.50x = 112,807.80 × 45,941.58
  4. Step 4: Simplify right side
    81,745.50x = 5,182,568,568.32
  5. Step 5: Solve for x
    x = 5,182,568,568.32/81,745.50
  6. Step 6: Final answer
    x = 63,398.82

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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.