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Finding the Fourth Proportional to 70,463.53, 105,695.07 and 17,872.89

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Solution

The fourth proportional to 70,463.53, 105,695.07 and 17,872.89 is: 26,809.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,463.53 : 105,695.07 = 17,872.89 : x
  2. Step 2: Convert to fraction form
    70,463.53/105,695.07 = 17,872.89/x
  3. Step 3: Cross multiply
    70,463.53x = 105,695.07 × 17,872.89
  4. Step 4: Simplify right side
    70,463.53x = 1,889,076,359.65
  5. Step 5: Solve for x
    x = 1,889,076,359.65/70,463.53
  6. Step 6: Final answer
    x = 26,809.28

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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.