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Finding the Fourth Proportional to 71,051.76, 98,051.21 and 39,220.43

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Solution

The fourth proportional to 71,051.76, 98,051.21 and 39,220.43 is: 54,124.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,051.76 : 98,051.21 = 39,220.43 : x
  2. Step 2: Convert to fraction form
    71,051.76/98,051.21 = 39,220.43/x
  3. Step 3: Cross multiply
    71,051.76x = 98,051.21 × 39,220.43
  4. Step 4: Simplify right side
    71,051.76x = 3,845,610,176.99
  5. Step 5: Solve for x
    x = 3,845,610,176.99/71,051.76
  6. Step 6: Final answer
    x = 54,124.06

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1.5x scale

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.