Home / 90,311.56-124,631.96-51,548.60

Finding the Fourth Proportional to 90,311.56, 124,631.96 and 51,548.60

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Solution

The fourth proportional to 90,311.56, 124,631.96 and 51,548.60 is: 71,138.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,311.56 : 124,631.96 = 51,548.60 : x
  2. Step 2: Convert to fraction form
    90,311.56/124,631.96 = 51,548.60/x
  3. Step 3: Cross multiply
    90,311.56x = 124,631.96 × 51,548.60
  4. Step 4: Simplify right side
    90,311.56x = 6,424,603,053.26
  5. Step 5: Solve for x
    x = 6,424,603,053.26/90,311.56
  6. Step 6: Final answer
    x = 71,138.21

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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.