Home / 51,922.88-77,875.68-20,749.76

Finding the Fourth Proportional to 51,922.88, 77,875.68 and 20,749.76

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Solution

The fourth proportional to 51,922.88, 77,875.68 and 20,749.76 is: 31,121.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,922.88 : 77,875.68 = 20,749.76 : x
  2. Step 2: Convert to fraction form
    51,922.88/77,875.68 = 20,749.76/x
  3. Step 3: Cross multiply
    51,922.88x = 77,875.68 × 20,749.76
  4. Step 4: Simplify right side
    51,922.88x = 1,615,901,669.84
  5. Step 5: Solve for x
    x = 1,615,901,669.84/51,922.88
  6. Step 6: Final answer
    x = 31,121.19

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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.