Home / 49,831.40-74,709.90-30,105.80

Finding the Fourth Proportional to 49,831.40, 74,709.90 and 30,105.80

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Solution

The fourth proportional to 49,831.40, 74,709.90 and 30,105.80 is: 45,136.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,831.40 : 74,709.90 = 30,105.80 : x
  2. Step 2: Convert to fraction form
    49,831.40/74,709.90 = 30,105.80/x
  3. Step 3: Cross multiply
    49,831.40x = 74,709.90 × 30,105.80
  4. Step 4: Simplify right side
    49,831.40x = 2,249,201,307.42
  5. Step 5: Solve for x
    x = 2,249,201,307.42/49,831.40
  6. Step 6: Final answer
    x = 45,136.23

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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.