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Finding the Fourth Proportional to 105,001.91, 144,905.62 and 57,257.88

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Solution

The fourth proportional to 105,001.91, 144,905.62 and 57,257.88 is: 79,017.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,001.91 : 144,905.62 = 57,257.88 : x
  2. Step 2: Convert to fraction form
    105,001.91/144,905.62 = 57,257.88/x
  3. Step 3: Cross multiply
    105,001.91x = 144,905.62 × 57,257.88
  4. Step 4: Simplify right side
    105,001.91x = 8,296,988,601.29
  5. Step 5: Solve for x
    x = 8,296,988,601.29/105,001.91
  6. Step 6: Final answer
    x = 79,017.50

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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.