Home / 86,620.98-129,943.79-26,654.43

Finding the Fourth Proportional to 86,620.98, 129,943.79 and 26,654.43

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Solution

The fourth proportional to 86,620.98, 129,943.79 and 26,654.43 is: 39,985.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,620.98 : 129,943.79 = 26,654.43 : x
  2. Step 2: Convert to fraction form
    86,620.98/129,943.79 = 26,654.43/x
  3. Step 3: Cross multiply
    86,620.98x = 129,943.79 × 26,654.43
  4. Step 4: Simplify right side
    86,620.98x = 3,463,577,521.22
  5. Step 5: Solve for x
    x = 3,463,577,521.22/86,620.98
  6. Step 6: Final answer
    x = 39,985.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.