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Finding the Fourth Proportional to 71,220.76, 98,254.94 and 40,998.84

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Solution

The fourth proportional to 71,220.76, 98,254.94 and 40,998.84 is: 56,561.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,220.76 : 98,254.94 = 40,998.84 : x
  2. Step 2: Convert to fraction form
    71,220.76/98,254.94 = 40,998.84/x
  3. Step 3: Cross multiply
    71,220.76x = 98,254.94 × 40,998.84
  4. Step 4: Simplify right side
    71,220.76x = 4,028,338,564.27
  5. Step 5: Solve for x
    x = 4,028,338,564.27/71,220.76
  6. Step 6: Final answer
    x = 56,561.30

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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.