Home / 51,921.74-77,878.69-20,325.76

Finding the Fourth Proportional to 51,921.74, 77,878.69 and 20,325.76

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Solution

The fourth proportional to 51,921.74, 77,878.69 and 20,325.76 is: 30,487.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,921.74 : 77,878.69 = 20,325.76 : x
  2. Step 2: Convert to fraction form
    51,921.74/77,878.69 = 20,325.76/x
  3. Step 3: Cross multiply
    51,921.74x = 77,878.69 × 20,325.76
  4. Step 4: Simplify right side
    51,921.74x = 1,582,943,316.54
  5. Step 5: Solve for x
    x = 1,582,943,316.54/51,921.74
  6. Step 6: Final answer
    x = 30,487.10

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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.