Home / 71,428.55-98,572.74-39,161.03

Finding the Fourth Proportional to 71,428.55, 98,572.74 and 39,161.03

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Solution

The fourth proportional to 71,428.55, 98,572.74 and 39,161.03 is: 54,042.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,428.55 : 98,572.74 = 39,161.03 : x
  2. Step 2: Convert to fraction form
    71,428.55/98,572.74 = 39,161.03/x
  3. Step 3: Cross multiply
    71,428.55x = 98,572.74 × 39,161.03
  4. Step 4: Simplify right side
    71,428.55x = 3,860,210,028.32
  5. Step 5: Solve for x
    x = 3,860,210,028.32/71,428.55
  6. Step 6: Final answer
    x = 54,042.96

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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.