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Finding the Fourth Proportional to 81,674.37, 112,702.23 and 45,864.09

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Solution

The fourth proportional to 81,674.37, 112,702.23 and 45,864.09 is: 63,287.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,674.37 : 112,702.23 = 45,864.09 : x
  2. Step 2: Convert to fraction form
    81,674.37/112,702.23 = 45,864.09/x
  3. Step 3: Cross multiply
    81,674.37x = 112,702.23 × 45,864.09
  4. Step 4: Simplify right side
    81,674.37x = 5,168,985,219.92
  5. Step 5: Solve for x
    x = 5,168,985,219.92/81,674.37
  6. Step 6: Final answer
    x = 63,287.73

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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.