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Finding the Fourth Proportional to 71,813.51, 107,727.64 and 27,477.55

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Solution

The fourth proportional to 71,813.51, 107,727.64 and 27,477.55 is: 41,219.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,813.51 : 107,727.64 = 27,477.55 : x
  2. Step 2: Convert to fraction form
    71,813.51/107,727.64 = 27,477.55/x
  3. Step 3: Cross multiply
    71,813.51x = 107,727.64 × 27,477.55
  4. Step 4: Simplify right side
    71,813.51x = 2,960,091,680.45
  5. Step 5: Solve for x
    x = 2,960,091,680.45/71,813.51
  6. Step 6: Final answer
    x = 41,219.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.