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Finding the Fourth Proportional to 61,485.70, 84,849.42 and 34,630.87

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Solution

The fourth proportional to 61,485.70, 84,849.42 and 34,630.87 is: 47,790.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,485.70 : 84,849.42 = 34,630.87 : x
  2. Step 2: Convert to fraction form
    61,485.70/84,849.42 = 34,630.87/x
  3. Step 3: Cross multiply
    61,485.70x = 84,849.42 × 34,630.87
  4. Step 4: Simplify right side
    61,485.70x = 2,938,409,233.60
  5. Step 5: Solve for x
    x = 2,938,409,233.60/61,485.70
  6. Step 6: Final answer
    x = 47,790.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.