Home / 71,237.12-98,305.48-39,405.28

Finding the Fourth Proportional to 71,237.12, 98,305.48 and 39,405.28

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Solution

The fourth proportional to 71,237.12, 98,305.48 and 39,405.28 is: 54,378.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,237.12 : 98,305.48 = 39,405.28 : x
  2. Step 2: Convert to fraction form
    71,237.12/98,305.48 = 39,405.28/x
  3. Step 3: Cross multiply
    71,237.12x = 98,305.48 × 39,405.28
  4. Step 4: Simplify right side
    71,237.12x = 3,873,754,964.93
  5. Step 5: Solve for x
    x = 3,873,754,964.93/71,237.12
  6. Step 6: Final answer
    x = 54,378.32

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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.