Home / 90,640.16-125,083.32-50,357.66

Finding the Fourth Proportional to 90,640.16, 125,083.32 and 50,357.66

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Solution

The fourth proportional to 90,640.16, 125,083.32 and 50,357.66 is: 69,493.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,640.16 : 125,083.32 = 50,357.66 : x
  2. Step 2: Convert to fraction form
    90,640.16/125,083.32 = 50,357.66/x
  3. Step 3: Cross multiply
    90,640.16x = 125,083.32 × 50,357.66
  4. Step 4: Simplify right side
    90,640.16x = 6,298,903,300.23
  5. Step 5: Solve for x
    x = 6,298,903,300.23/90,640.16
  6. Step 6: Final answer
    x = 69,493.51

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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.