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Finding the Fourth Proportional to 81,855.50, 112,957.28 and 45,555.93

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Solution

The fourth proportional to 81,855.50, 112,957.28 and 45,555.93 is: 62,865.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,855.50 : 112,957.28 = 45,555.93 : x
  2. Step 2: Convert to fraction form
    81,855.50/112,957.28 = 45,555.93/x
  3. Step 3: Cross multiply
    81,855.50x = 112,957.28 × 45,555.93
  4. Step 4: Simplify right side
    81,855.50x = 5,145,873,641.03
  5. Step 5: Solve for x
    x = 5,145,873,641.03/81,855.50
  6. Step 6: Final answer
    x = 62,865.33

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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.