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Finding the Fourth Proportional to 73,292.79, 109,939.63 and 20,702.73

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Solution

The fourth proportional to 73,292.79, 109,939.63 and 20,702.73 is: 31,054.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,292.79 : 109,939.63 = 20,702.73 : x
  2. Step 2: Convert to fraction form
    73,292.79/109,939.63 = 20,702.73/x
  3. Step 3: Cross multiply
    73,292.79x = 109,939.63 × 20,702.73
  4. Step 4: Simplify right side
    73,292.79x = 2,276,050,476.19
  5. Step 5: Solve for x
    x = 2,276,050,476.19/73,292.79
  6. Step 6: Final answer
    x = 31,054.22

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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.