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Finding the Fourth Proportional to 81,540.77, 112,527.08 and 45,730.01

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Solution

The fourth proportional to 81,540.77, 112,527.08 and 45,730.01 is: 63,107.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,540.77 : 112,527.08 = 45,730.01 : x
  2. Step 2: Convert to fraction form
    81,540.77/112,527.08 = 45,730.01/x
  3. Step 3: Cross multiply
    81,540.77x = 112,527.08 × 45,730.01
  4. Step 4: Simplify right side
    81,540.77x = 5,145,863,702.39
  5. Step 5: Solve for x
    x = 5,145,863,702.39/81,540.77
  6. Step 6: Final answer
    x = 63,107.87

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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.