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Finding the Fourth Proportional to 49,978.64, 74,979.30 and 14,915.36

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Solution

The fourth proportional to 49,978.64, 74,979.30 and 14,915.36 is: 22,376.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,978.64 : 74,979.30 = 14,915.36 : x
  2. Step 2: Convert to fraction form
    49,978.64/74,979.30 = 14,915.36/x
  3. Step 3: Cross multiply
    49,978.64x = 74,979.30 × 14,915.36
  4. Step 4: Simplify right side
    49,978.64x = 1,118,343,252.05
  5. Step 5: Solve for x
    x = 1,118,343,252.05/49,978.64
  6. Step 6: Final answer
    x = 22,376.42

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.