Home / 71,708.58-98,948.23-39,871.35

Finding the Fourth Proportional to 71,708.58, 98,948.23 and 39,871.35

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Solution

The fourth proportional to 71,708.58, 98,948.23 and 39,871.35 is: 55,017.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,708.58 : 98,948.23 = 39,871.35 : x
  2. Step 2: Convert to fraction form
    71,708.58/98,948.23 = 39,871.35/x
  3. Step 3: Cross multiply
    71,708.58x = 98,948.23 × 39,871.35
  4. Step 4: Simplify right side
    71,708.58x = 3,945,199,510.21
  5. Step 5: Solve for x
    x = 3,945,199,510.21/71,708.58
  6. Step 6: Final answer
    x = 55,017.12

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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.