Home / 31,081.12-46,621.04-7,707.28

Finding the Fourth Proportional to 31,081.12, 46,621.04 and 7,707.28

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Solution

The fourth proportional to 31,081.12, 46,621.04 and 7,707.28 is: 11,560.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,081.12 : 46,621.04 = 7,707.28 : x
  2. Step 2: Convert to fraction form
    31,081.12/46,621.04 = 7,707.28/x
  3. Step 3: Cross multiply
    31,081.12x = 46,621.04 × 7,707.28
  4. Step 4: Simplify right side
    31,081.12x = 359,321,409.17
  5. Step 5: Solve for x
    x = 359,321,409.17/31,081.12
  6. Step 6: Final answer
    x = 11,560.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.