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Finding the Fourth Proportional to 90,304.98, 124,619.50 and 49,468.78

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Solution

The fourth proportional to 90,304.98, 124,619.50 and 49,468.78 is: 68,266.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,304.98 : 124,619.50 = 49,468.78 : x
  2. Step 2: Convert to fraction form
    90,304.98/124,619.50 = 49,468.78/x
  3. Step 3: Cross multiply
    90,304.98x = 124,619.50 × 49,468.78
  4. Step 4: Simplify right side
    90,304.98x = 6,164,774,193.99
  5. Step 5: Solve for x
    x = 6,164,774,193.99/90,304.98
  6. Step 6: Final answer
    x = 68,266.16

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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.