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Finding the Fourth Proportional to 90,370.90, 124,711.84 and 50,090.72

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Solution

The fourth proportional to 90,370.90, 124,711.84 and 50,090.72 is: 69,125.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,370.90 : 124,711.84 = 50,090.72 : x
  2. Step 2: Convert to fraction form
    90,370.90/124,711.84 = 50,090.72/x
  3. Step 3: Cross multiply
    90,370.90x = 124,711.84 × 50,090.72
  4. Step 4: Simplify right side
    90,370.90x = 6,246,905,297.18
  5. Step 5: Solve for x
    x = 6,246,905,297.18/90,370.90
  6. Step 6: Final answer
    x = 69,125.19

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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.