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Finding the Fourth Proportional to 90,058, 124,287.72 and 50,321.68

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Solution

The fourth proportional to 90,058, 124,287.72 and 50,321.68 is: 69,448.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,058 : 124,287.72 = 50,321.68 : x
  2. Step 2: Convert to fraction form
    90,058/124,287.72 = 50,321.68/x
  3. Step 3: Cross multiply
    90,058x = 124,287.72 × 50,321.68
  4. Step 4: Simplify right side
    90,058x = 6,254,366,873.77
  5. Step 5: Solve for x
    x = 6,254,366,873.77/90,058
  6. Step 6: Final answer
    x = 69,448.21

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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.