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Finding the Fourth Proportional to 61,089.63, 91,611.95 and 21,098.44

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Solution

The fourth proportional to 61,089.63, 91,611.95 and 21,098.44 is: 31,639.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,089.63 : 91,611.95 = 21,098.44 : x
  2. Step 2: Convert to fraction form
    61,089.63/91,611.95 = 21,098.44/x
  3. Step 3: Cross multiply
    61,089.63x = 91,611.95 × 21,098.44
  4. Step 4: Simplify right side
    61,089.63x = 1,932,869,239.38
  5. Step 5: Solve for x
    x = 1,932,869,239.38/61,089.63
  6. Step 6: Final answer
    x = 31,639.89

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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.