Home / 90,418.64-124,752.89-54,105.32

Finding the Fourth Proportional to 90,418.64, 124,752.89 and 54,105.32

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Solution

The fourth proportional to 90,418.64, 124,752.89 and 54,105.32 is: 74,650.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,418.64 : 124,752.89 = 54,105.32 : x
  2. Step 2: Convert to fraction form
    90,418.64/124,752.89 = 54,105.32/x
  3. Step 3: Cross multiply
    90,418.64x = 124,752.89 × 54,105.32
  4. Step 4: Simplify right side
    90,418.64x = 6,749,795,481.52
  5. Step 5: Solve for x
    x = 6,749,795,481.52/90,418.64
  6. Step 6: Final answer
    x = 74,650.49

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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.