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Finding the Fourth Proportional to 58,836, 81,137.80 and 38,709.96

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Solution

The fourth proportional to 58,836, 81,137.80 and 38,709.96 is: 53,382.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,836 : 81,137.80 = 38,709.96 : x
  2. Step 2: Convert to fraction form
    58,836/81,137.80 = 38,709.96/x
  3. Step 3: Cross multiply
    58,836x = 81,137.80 × 38,709.96
  4. Step 4: Simplify right side
    58,836x = 3,140,840,992.49
  5. Step 5: Solve for x
    x = 3,140,840,992.49/58,836
  6. Step 6: Final answer
    x = 53,382.98

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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.