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Finding the Fourth Proportional to 77,335.56, 115,899.66 and 63,649.80

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Solution

The fourth proportional to 77,335.56, 115,899.66 and 63,649.80 is: 95,389.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,335.56 : 115,899.66 = 63,649.80 : x
  2. Step 2: Convert to fraction form
    77,335.56/115,899.66 = 63,649.80/x
  3. Step 3: Cross multiply
    77,335.56x = 115,899.66 × 63,649.80
  4. Step 4: Simplify right side
    77,335.56x = 7,376,990,179.07
  5. Step 5: Solve for x
    x = 7,376,990,179.07/77,335.56
  6. Step 6: Final answer
    x = 95,389.37

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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.