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Finding the Fourth Proportional to 90,306, 124,622.40 and 50,562

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Solution

The fourth proportional to 90,306, 124,622.40 and 50,562 is: 69,775.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,306 : 124,622.40 = 50,562 : x
  2. Step 2: Convert to fraction form
    90,306/124,622.40 = 50,562/x
  3. Step 3: Cross multiply
    90,306x = 124,622.40 × 50,562
  4. Step 4: Simplify right side
    90,306x = 6,301,157,788.80
  5. Step 5: Solve for x
    x = 6,301,157,788.80/90,306
  6. Step 6: Final answer
    x = 69,775.63

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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.