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Finding the Fourth Proportional to 81,674.98, 112,707.98 and 47,685.35

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Solution

The fourth proportional to 81,674.98, 112,707.98 and 47,685.35 is: 65,803.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,674.98 : 112,707.98 = 47,685.35 : x
  2. Step 2: Convert to fraction form
    81,674.98/112,707.98 = 47,685.35/x
  3. Step 3: Cross multiply
    81,674.98x = 112,707.98 × 47,685.35
  4. Step 4: Simplify right side
    81,674.98x = 5,374,519,474.09
  5. Step 5: Solve for x
    x = 5,374,519,474.09/81,674.98
  6. Step 6: Final answer
    x = 65,803.74

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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.