Home / 90,418.34-124,771.86-50,129.69

Finding the Fourth Proportional to 90,418.34, 124,771.86 and 50,129.69

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Solution

The fourth proportional to 90,418.34, 124,771.86 and 50,129.69 is: 69,175.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,418.34 : 124,771.86 = 50,129.69 : x
  2. Step 2: Convert to fraction form
    90,418.34/124,771.86 = 50,129.69/x
  3. Step 3: Cross multiply
    90,418.34x = 124,771.86 × 50,129.69
  4. Step 4: Simplify right side
    90,418.34x = 6,254,774,038.66
  5. Step 5: Solve for x
    x = 6,254,774,038.66/90,418.34
  6. Step 6: Final answer
    x = 69,175.94

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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.