Home / 51,890.21-77,783.30-20,256.77

Finding the Fourth Proportional to 51,890.21, 77,783.30 and 20,256.77

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Solution

The fourth proportional to 51,890.21, 77,783.30 and 20,256.77 is: 30,364.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,890.21 : 77,783.30 = 20,256.77 : x
  2. Step 2: Convert to fraction form
    51,890.21/77,783.30 = 20,256.77/x
  3. Step 3: Cross multiply
    51,890.21x = 77,783.30 × 20,256.77
  4. Step 4: Simplify right side
    51,890.21x = 1,575,638,663.04
  5. Step 5: Solve for x
    x = 1,575,638,663.04/51,890.21
  6. Step 6: Final answer
    x = 30,364.85

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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.