Home / 54,678.21-75,455.58-30,812.55

Finding the Fourth Proportional to 54,678.21, 75,455.58 and 30,812.55

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Solution

The fourth proportional to 54,678.21, 75,455.58 and 30,812.55 is: 42,521.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,678.21 : 75,455.58 = 30,812.55 : x
  2. Step 2: Convert to fraction form
    54,678.21/75,455.58 = 30,812.55/x
  3. Step 3: Cross multiply
    54,678.21x = 75,455.58 × 30,812.55
  4. Step 4: Simplify right side
    54,678.21x = 2,324,978,831.53
  5. Step 5: Solve for x
    x = 2,324,978,831.53/54,678.21
  6. Step 6: Final answer
    x = 42,521.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.