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Finding the Fourth Proportional to 81,674.61, 112,710.97 and 45,864.64

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Solution

The fourth proportional to 81,674.61, 112,710.97 and 45,864.64 is: 63,293.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,674.61 : 112,710.97 = 45,864.64 : x
  2. Step 2: Convert to fraction form
    81,674.61/112,710.97 = 45,864.64/x
  3. Step 3: Cross multiply
    81,674.61x = 112,710.97 × 45,864.64
  4. Step 4: Simplify right side
    81,674.61x = 5,169,448,230.22
  5. Step 5: Solve for x
    x = 5,169,448,230.22/81,674.61
  6. Step 6: Final answer
    x = 63,293.21

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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.