Home / 85,914.66-128,794.20-30,497.70

Finding the Fourth Proportional to 85,914.66, 128,794.20 and 30,497.70

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Solution

The fourth proportional to 85,914.66, 128,794.20 and 30,497.70 is: 45,718.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,914.66 : 128,794.20 = 30,497.70 : x
  2. Step 2: Convert to fraction form
    85,914.66/128,794.20 = 30,497.70/x
  3. Step 3: Cross multiply
    85,914.66x = 128,794.20 × 30,497.70
  4. Step 4: Simplify right side
    85,914.66x = 3,927,926,873.34
  5. Step 5: Solve for x
    x = 3,927,926,873.34/85,914.66
  6. Step 6: Final answer
    x = 45,718.94

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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.