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Finding the Fourth Proportional to 90,315.40, 124,630.32 and 50,026

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Solution

The fourth proportional to 90,315.40, 124,630.32 and 50,026 is: 69,033.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,315.40 : 124,630.32 = 50,026 : x
  2. Step 2: Convert to fraction form
    90,315.40/124,630.32 = 50,026/x
  3. Step 3: Cross multiply
    90,315.40x = 124,630.32 × 50,026
  4. Step 4: Simplify right side
    90,315.40x = 6,234,756,388.32
  5. Step 5: Solve for x
    x = 6,234,756,388.32/90,315.40
  6. Step 6: Final answer
    x = 69,033.15

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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.