Home / 76,400.81-114,497.39-28,990.42

Finding the Fourth Proportional to 76,400.81, 114,497.39 and 28,990.42

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Solution

The fourth proportional to 76,400.81, 114,497.39 and 28,990.42 is: 43,446.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,400.81 : 114,497.39 = 28,990.42 : x
  2. Step 2: Convert to fraction form
    76,400.81/114,497.39 = 28,990.42/x
  3. Step 3: Cross multiply
    76,400.81x = 114,497.39 × 28,990.42
  4. Step 4: Simplify right side
    76,400.81x = 3,319,327,211.24
  5. Step 5: Solve for x
    x = 3,319,327,211.24/76,400.81
  6. Step 6: Final answer
    x = 43,446.23

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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.