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Finding the Fourth Proportional to 115,630.83, 159,571.64 and 67,884.98

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Solution

The fourth proportional to 115,630.83, 159,571.64 and 67,884.98 is: 93,681.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,630.83 : 159,571.64 = 67,884.98 : x
  2. Step 2: Convert to fraction form
    115,630.83/159,571.64 = 67,884.98/x
  3. Step 3: Cross multiply
    115,630.83x = 159,571.64 × 67,884.98
  4. Step 4: Simplify right side
    115,630.83x = 10,832,516,961.82
  5. Step 5: Solve for x
    x = 10,832,516,961.82/115,630.83
  6. Step 6: Final answer
    x = 93,681.91

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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.