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Finding the Fourth Proportional to 61,092.81, 91,653.56 and 18,970.71

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Solution

The fourth proportional to 61,092.81, 91,653.56 and 18,970.71 is: 28,460.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,092.81 : 91,653.56 = 18,970.71 : x
  2. Step 2: Convert to fraction form
    61,092.81/91,653.56 = 18,970.71/x
  3. Step 3: Cross multiply
    61,092.81x = 91,653.56 × 18,970.71
  4. Step 4: Simplify right side
    61,092.81x = 1,738,733,012.37
  5. Step 5: Solve for x
    x = 1,738,733,012.37/61,092.81
  6. Step 6: Final answer
    x = 28,460.52

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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.