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Finding the Fourth Proportional to 86,622.38, 129,985.40 and 37,374.38

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Solution

The fourth proportional to 86,622.38, 129,985.40 and 37,374.38 is: 56,083.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,622.38 : 129,985.40 = 37,374.38 : x
  2. Step 2: Convert to fraction form
    86,622.38/129,985.40 = 37,374.38/x
  3. Step 3: Cross multiply
    86,622.38x = 129,985.40 × 37,374.38
  4. Step 4: Simplify right side
    86,622.38x = 4,858,123,734.05
  5. Step 5: Solve for x
    x = 4,858,123,734.05/86,622.38
  6. Step 6: Final answer
    x = 56,083.93

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Why These Related Problems?

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