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Finding the Fourth Proportional to 90,009, 124,212.48 and 50,265

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Solution

The fourth proportional to 90,009, 124,212.48 and 50,265 is: 69,365.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,009 : 124,212.48 = 50,265 : x
  2. Step 2: Convert to fraction form
    90,009/124,212.48 = 50,265/x
  3. Step 3: Cross multiply
    90,009x = 124,212.48 × 50,265
  4. Step 4: Simplify right side
    90,009x = 6,243,540,307.20
  5. Step 5: Solve for x
    x = 6,243,540,307.20/90,009
  6. Step 6: Final answer
    x = 69,365.73

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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.