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Finding the Fourth Proportional to 74,503.49, 102,808.59 and 43,871.72

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Solution

The fourth proportional to 74,503.49, 102,808.59 and 43,871.72 is: 60,539.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,503.49 : 102,808.59 = 43,871.72 : x
  2. Step 2: Convert to fraction form
    74,503.49/102,808.59 = 43,871.72/x
  3. Step 3: Cross multiply
    74,503.49x = 102,808.59 × 43,871.72
  4. Step 4: Simplify right side
    74,503.49x = 4,510,389,674.07
  5. Step 5: Solve for x
    x = 4,510,389,674.07/74,503.49
  6. Step 6: Final answer
    x = 60,539.31

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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.