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Finding the Fourth Proportional to 88,121.82, 121,567.83 and 61,328.22

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Solution

The fourth proportional to 88,121.82, 121,567.83 and 61,328.22 is: 84,604.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,121.82 : 121,567.83 = 61,328.22 : x
  2. Step 2: Convert to fraction form
    88,121.82/121,567.83 = 61,328.22/x
  3. Step 3: Cross multiply
    88,121.82x = 121,567.83 × 61,328.22
  4. Step 4: Simplify right side
    88,121.82x = 7,455,538,623.16
  5. Step 5: Solve for x
    x = 7,455,538,623.16/88,121.82
  6. Step 6: Final answer
    x = 84,604.91

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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.