Home / 90,921.02-125,462.01-50,638.53

Finding the Fourth Proportional to 90,921.02, 125,462.01 and 50,638.53

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Solution

The fourth proportional to 90,921.02, 125,462.01 and 50,638.53 is: 69,876.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,921.02 : 125,462.01 = 50,638.53 : x
  2. Step 2: Convert to fraction form
    90,921.02/125,462.01 = 50,638.53/x
  3. Step 3: Cross multiply
    90,921.02x = 125,462.01 × 50,638.53
  4. Step 4: Simplify right side
    90,921.02x = 6,353,211,757.25
  5. Step 5: Solve for x
    x = 6,353,211,757.25/90,921.02
  6. Step 6: Final answer
    x = 69,876.16

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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.