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Finding the Fourth Proportional to 86,051.80, 118,744.05 and 47,810.64

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Solution

The fourth proportional to 86,051.80, 118,744.05 and 47,810.64 is: 65,974.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,051.80 : 118,744.05 = 47,810.64 : x
  2. Step 2: Convert to fraction form
    86,051.80/118,744.05 = 47,810.64/x
  3. Step 3: Cross multiply
    86,051.80x = 118,744.05 × 47,810.64
  4. Step 4: Simplify right side
    86,051.80x = 5,677,229,382.34
  5. Step 5: Solve for x
    x = 5,677,229,382.34/86,051.80
  6. Step 6: Final answer
    x = 65,974.56

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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.