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Finding the Fourth Proportional to 125,311.63, 187,892.38 and 39,885.59

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Solution

The fourth proportional to 125,311.63, 187,892.38 and 39,885.59 is: 59,804.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,311.63 : 187,892.38 = 39,885.59 : x
  2. Step 2: Convert to fraction form
    125,311.63/187,892.38 = 39,885.59/x
  3. Step 3: Cross multiply
    125,311.63x = 187,892.38 × 39,885.59
  4. Step 4: Simplify right side
    125,311.63x = 7,494,197,929.45
  5. Step 5: Solve for x
    x = 7,494,197,929.45/125,311.63
  6. Step 6: Final answer
    x = 59,804.49

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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.