Home / 51,629.40-77,424.90-20,458.20

Finding the Fourth Proportional to 51,629.40, 77,424.90 and 20,458.20

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Solution

The fourth proportional to 51,629.40, 77,424.90 and 20,458.20 is: 30,679.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,629.40 : 77,424.90 = 20,458.20 : x
  2. Step 2: Convert to fraction form
    51,629.40/77,424.90 = 20,458.20/x
  3. Step 3: Cross multiply
    51,629.40x = 77,424.90 × 20,458.20
  4. Step 4: Simplify right side
    51,629.40x = 1,583,974,089.18
  5. Step 5: Solve for x
    x = 1,583,974,089.18/51,629.40
  6. Step 6: Final answer
    x = 30,679.69

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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.