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Finding the Fourth Proportional to 86,560.88, 129,864.33 and 36,643.07

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Solution

The fourth proportional to 86,560.88, 129,864.33 and 36,643.07 is: 54,974.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,560.88 : 129,864.33 = 36,643.07 : x
  2. Step 2: Convert to fraction form
    86,560.88/129,864.33 = 36,643.07/x
  3. Step 3: Cross multiply
    86,560.88x = 129,864.33 × 36,643.07
  4. Step 4: Simplify right side
    86,560.88x = 4,758,628,059.35
  5. Step 5: Solve for x
    x = 4,758,628,059.35/86,560.88
  6. Step 6: Final answer
    x = 54,974.35

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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.