Home / 45,987.75-68,981.63-18,305.19

Finding the Fourth Proportional to 45,987.75, 68,981.63 and 18,305.19

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Solution

The fourth proportional to 45,987.75, 68,981.63 and 18,305.19 is: 27,457.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,987.75 : 68,981.63 = 18,305.19 : x
  2. Step 2: Convert to fraction form
    45,987.75/68,981.63 = 18,305.19/x
  3. Step 3: Cross multiply
    45,987.75x = 68,981.63 × 18,305.19
  4. Step 4: Simplify right side
    45,987.75x = 1,262,721,752.13
  5. Step 5: Solve for x
    x = 1,262,721,752.13/45,987.75
  6. Step 6: Final answer
    x = 27,457.79

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Similar ratio
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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.