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Finding the Fourth Proportional to 90,304, 124,615.68 and 50,017.60

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Solution

The fourth proportional to 90,304, 124,615.68 and 50,017.60 is: 69,022.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,304 : 124,615.68 = 50,017.60 : x
  2. Step 2: Convert to fraction form
    90,304/124,615.68 = 50,017.60/x
  3. Step 3: Cross multiply
    90,304x = 124,615.68 × 50,017.60
  4. Step 4: Simplify right side
    90,304x = 6,232,977,235.97
  5. Step 5: Solve for x
    x = 6,232,977,235.97/90,304
  6. Step 6: Final answer
    x = 69,022.16

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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.