Home / 76,621.23-114,931.83-21,217.23

Finding the Fourth Proportional to 76,621.23, 114,931.83 and 21,217.23

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Solution

The fourth proportional to 76,621.23, 114,931.83 and 21,217.23 is: 31,825.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,621.23 : 114,931.83 = 21,217.23 : x
  2. Step 2: Convert to fraction form
    76,621.23/114,931.83 = 21,217.23/x
  3. Step 3: Cross multiply
    76,621.23x = 114,931.83 × 21,217.23
  4. Step 4: Simplify right side
    76,621.23x = 2,438,535,071.43
  5. Step 5: Solve for x
    x = 2,438,535,071.43/76,621.23
  6. Step 6: Final answer
    x = 31,825.84

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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.