Home / 51,428.47-77,142.71-21,825.55

Finding the Fourth Proportional to 51,428.47, 77,142.71 and 21,825.55

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Solution

The fourth proportional to 51,428.47, 77,142.71 and 21,825.55 is: 32,738.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,428.47 : 77,142.71 = 21,825.55 : x
  2. Step 2: Convert to fraction form
    51,428.47/77,142.71 = 21,825.55/x
  3. Step 3: Cross multiply
    51,428.47x = 77,142.71 × 21,825.55
  4. Step 4: Simplify right side
    51,428.47x = 1,683,682,225.23
  5. Step 5: Solve for x
    x = 1,683,682,225.23/51,428.47
  6. Step 6: Final answer
    x = 32,738.33

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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.