Home / 46,080.09-69,129.18-21,120.75

Finding the Fourth Proportional to 46,080.09, 69,129.18 and 21,120.75

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Solution

The fourth proportional to 46,080.09, 69,129.18 and 21,120.75 is: 31,685.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,080.09 : 69,129.18 = 21,120.75 : x
  2. Step 2: Convert to fraction form
    46,080.09/69,129.18 = 21,120.75/x
  3. Step 3: Cross multiply
    46,080.09x = 69,129.18 × 21,120.75
  4. Step 4: Simplify right side
    46,080.09x = 1,460,060,128.49
  5. Step 5: Solve for x
    x = 1,460,060,128.49/46,080.09
  6. Step 6: Final answer
    x = 31,685.27

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1.5x scale

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.