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Finding the Fourth Proportional to 61,321, 92,391.26 and 55,404.76

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Solution

The fourth proportional to 61,321, 92,391.26 and 55,404.76 is: 83,477.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,321 : 92,391.26 = 55,404.76 : x
  2. Step 2: Convert to fraction form
    61,321/92,391.26 = 55,404.76/x
  3. Step 3: Cross multiply
    61,321x = 92,391.26 × 55,404.76
  4. Step 4: Simplify right side
    61,321x = 5,118,915,586.40
  5. Step 5: Solve for x
    x = 5,118,915,586.40/61,321
  6. Step 6: Final answer
    x = 83,477.37

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.