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Finding the Fourth Proportional to 70,374.30, 105,579.45 and 49,638.30

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Solution

The fourth proportional to 70,374.30, 105,579.45 and 49,638.30 is: 74,470.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,374.30 : 105,579.45 = 49,638.30 : x
  2. Step 2: Convert to fraction form
    70,374.30/105,579.45 = 49,638.30/x
  3. Step 3: Cross multiply
    70,374.30x = 105,579.45 × 49,638.30
  4. Step 4: Simplify right side
    70,374.30x = 5,240,784,412.94
  5. Step 5: Solve for x
    x = 5,240,784,412.94/70,374.30
  6. Step 6: Final answer
    x = 74,470.15

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Why These Related Problems?

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