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Finding the Fourth Proportional to 88,889.88, 122,681.61 and 50,649.28

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Solution

The fourth proportional to 88,889.88, 122,681.61 and 50,649.28 is: 69,903.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,889.88 : 122,681.61 = 50,649.28 : x
  2. Step 2: Convert to fraction form
    88,889.88/122,681.61 = 50,649.28/x
  3. Step 3: Cross multiply
    88,889.88x = 122,681.61 × 50,649.28
  4. Step 4: Simplify right side
    88,889.88x = 6,213,735,215.74
  5. Step 5: Solve for x
    x = 6,213,735,215.74/88,889.88
  6. Step 6: Final answer
    x = 69,903.74

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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.