Home / 71,405.47-98,539.55-39,576.42

Finding the Fourth Proportional to 71,405.47, 98,539.55 and 39,576.42

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Solution

The fourth proportional to 71,405.47, 98,539.55 and 39,576.42 is: 54,615.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,405.47 : 98,539.55 = 39,576.42 : x
  2. Step 2: Convert to fraction form
    71,405.47/98,539.55 = 39,576.42/x
  3. Step 3: Cross multiply
    71,405.47x = 98,539.55 × 39,576.42
  4. Step 4: Simplify right side
    71,405.47x = 3,899,842,617.41
  5. Step 5: Solve for x
    x = 3,899,842,617.41/71,405.47
  6. Step 6: Final answer
    x = 54,615.46

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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.