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Finding the Fourth Proportional to 88,699.78, 122,325.78 and 56,862.46

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Solution

The fourth proportional to 88,699.78, 122,325.78 and 56,862.46 is: 78,418.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,699.78 : 122,325.78 = 56,862.46 : x
  2. Step 2: Convert to fraction form
    88,699.78/122,325.78 = 56,862.46/x
  3. Step 3: Cross multiply
    88,699.78x = 122,325.78 × 56,862.46
  4. Step 4: Simplify right side
    88,699.78x = 6,955,744,772.22
  5. Step 5: Solve for x
    x = 6,955,744,772.22/88,699.78
  6. Step 6: Final answer
    x = 78,418.96

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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.