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Finding the Fourth Proportional to 61,433.09, 92,153.82 and 20,890.09

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Solution

The fourth proportional to 61,433.09, 92,153.82 and 20,890.09 is: 31,336.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,433.09 : 92,153.82 = 20,890.09 : x
  2. Step 2: Convert to fraction form
    61,433.09/92,153.82 = 20,890.09/x
  3. Step 3: Cross multiply
    61,433.09x = 92,153.82 × 20,890.09
  4. Step 4: Simplify right side
    61,433.09x = 1,925,101,489.19
  5. Step 5: Solve for x
    x = 1,925,101,489.19/61,433.09
  6. Step 6: Final answer
    x = 31,336.56

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1.5x scale

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.