Home / 77,137.55-106,418.47-50,270.25

Finding the Fourth Proportional to 77,137.55, 106,418.47 and 50,270.25

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Solution

The fourth proportional to 77,137.55, 106,418.47 and 50,270.25 is: 69,352.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,137.55 : 106,418.47 = 50,270.25 : x
  2. Step 2: Convert to fraction form
    77,137.55/106,418.47 = 50,270.25/x
  3. Step 3: Cross multiply
    77,137.55x = 106,418.47 × 50,270.25
  4. Step 4: Simplify right side
    77,137.55x = 5,349,683,091.52
  5. Step 5: Solve for x
    x = 5,349,683,091.52/77,137.55
  6. Step 6: Final answer
    x = 69,352.51

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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.