Home / 71,241.12-98,315.64-39,409.47

Finding the Fourth Proportional to 71,241.12, 98,315.64 and 39,409.47

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Solution

The fourth proportional to 71,241.12, 98,315.64 and 39,409.47 is: 54,386.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,241.12 : 98,315.64 = 39,409.47 : x
  2. Step 2: Convert to fraction form
    71,241.12/98,315.64 = 39,409.47/x
  3. Step 3: Cross multiply
    71,241.12x = 98,315.64 × 39,409.47
  4. Step 4: Simplify right side
    71,241.12x = 3,874,567,265.11
  5. Step 5: Solve for x
    x = 3,874,567,265.11/71,241.12
  6. Step 6: Final answer
    x = 54,386.67

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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.