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Finding the Fourth Proportional to 92,978.87, 139,386.54 and 36,858.39

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Solution

The fourth proportional to 92,978.87, 139,386.54 and 36,858.39 is: 55,255.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,978.87 : 139,386.54 = 36,858.39 : x
  2. Step 2: Convert to fraction form
    92,978.87/139,386.54 = 36,858.39/x
  3. Step 3: Cross multiply
    92,978.87x = 139,386.54 × 36,858.39
  4. Step 4: Simplify right side
    92,978.87x = 5,137,563,974.77
  5. Step 5: Solve for x
    x = 5,137,563,974.77/92,978.87
  6. Step 6: Final answer
    x = 55,255.18

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.