Home / 81,099.96-121,636.74-28,497.18

Finding the Fourth Proportional to 81,099.96, 121,636.74 and 28,497.18

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Solution

The fourth proportional to 81,099.96, 121,636.74 and 28,497.18 is: 42,741.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,099.96 : 121,636.74 = 28,497.18 : x
  2. Step 2: Convert to fraction form
    81,099.96/121,636.74 = 28,497.18/x
  3. Step 3: Cross multiply
    81,099.96x = 121,636.74 × 28,497.18
  4. Step 4: Simplify right side
    81,099.96x = 3,466,304,074.39
  5. Step 5: Solve for x
    x = 3,466,304,074.39/81,099.96
  6. Step 6: Final answer
    x = 42,741.13

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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.