Home / 87,818.98-131,728.81-21,259.00

Finding the Fourth Proportional to 87,818.98, 131,728.81 and 21,259.00

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Solution

The fourth proportional to 87,818.98, 131,728.81 and 21,259.00 is: 31,888.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,818.98 : 131,728.81 = 21,259.00 : x
  2. Step 2: Convert to fraction form
    87,818.98/131,728.81 = 21,259.00/x
  3. Step 3: Cross multiply
    87,818.98x = 131,728.81 × 21,259.00
  4. Step 4: Simplify right side
    87,818.98x = 2,800,422,389.32
  5. Step 5: Solve for x
    x = 2,800,422,389.32/87,818.98
  6. Step 6: Final answer
    x = 31,888.58

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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.