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Finding the Fourth Proportional to 88,813.88, 122,617.82 and 57,038.79

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Solution

The fourth proportional to 88,813.88, 122,617.82 and 57,038.79 is: 78,748.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,813.88 : 122,617.82 = 57,038.79 : x
  2. Step 2: Convert to fraction form
    88,813.88/122,617.82 = 57,038.79/x
  3. Step 3: Cross multiply
    88,813.88x = 122,617.82 × 57,038.79
  4. Step 4: Simplify right side
    88,813.88x = 6,993,972,227.83
  5. Step 5: Solve for x
    x = 6,993,972,227.83/88,813.88
  6. Step 6: Final answer
    x = 78,748.64

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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.