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Finding the Fourth Proportional to 71,051.66, 98,051.27 and 39,220.55

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Solution

The fourth proportional to 71,051.66, 98,051.27 and 39,220.55 is: 54,124.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,051.66 : 98,051.27 = 39,220.55 : x
  2. Step 2: Convert to fraction form
    71,051.66/98,051.27 = 39,220.55/x
  3. Step 3: Cross multiply
    71,051.66x = 98,051.27 × 39,220.55
  4. Step 4: Simplify right side
    71,051.66x = 3,845,624,737.60
  5. Step 5: Solve for x
    x = 3,845,624,737.60/71,051.66
  6. Step 6: Final answer
    x = 54,124.35

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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.