Home / 90,031.88-124,237.60-49,745.21

Finding the Fourth Proportional to 90,031.88, 124,237.60 and 49,745.21

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Solution

The fourth proportional to 90,031.88, 124,237.60 and 49,745.21 is: 68,644.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,031.88 : 124,237.60 = 49,745.21 : x
  2. Step 2: Convert to fraction form
    90,031.88/124,237.60 = 49,745.21/x
  3. Step 3: Cross multiply
    90,031.88x = 124,237.60 × 49,745.21
  4. Step 4: Simplify right side
    90,031.88x = 6,180,224,756.34
  5. Step 5: Solve for x
    x = 6,180,224,756.34/90,031.88
  6. Step 6: Final answer
    x = 68,644.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.