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Finding the Fourth Proportional to 61,851.84, 92,795.04 and 20,328

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Solution

The fourth proportional to 61,851.84, 92,795.04 and 20,328 is: 30,497.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,851.84 : 92,795.04 = 20,328 : x
  2. Step 2: Convert to fraction form
    61,851.84/92,795.04 = 20,328/x
  3. Step 3: Cross multiply
    61,851.84x = 92,795.04 × 20,328
  4. Step 4: Simplify right side
    61,851.84x = 1,886,337,573.12
  5. Step 5: Solve for x
    x = 1,886,337,573.12/61,851.84
  6. Step 6: Final answer
    x = 30,497.68

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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.