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Finding the Fourth Proportional to 81,704.80, 112,748.40 and 45,896.32

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Solution

The fourth proportional to 81,704.80, 112,748.40 and 45,896.32 is: 63,334.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,704.80 : 112,748.40 = 45,896.32 : x
  2. Step 2: Convert to fraction form
    81,704.80/112,748.40 = 45,896.32/x
  3. Step 3: Cross multiply
    81,704.80x = 112,748.40 × 45,896.32
  4. Step 4: Simplify right side
    81,704.80x = 5,174,736,645.89
  5. Step 5: Solve for x
    x = 5,174,736,645.89/81,704.80
  6. Step 6: Final answer
    x = 63,334.55

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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.