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Finding the Fourth Proportional to 71,661.72, 107,495.01 and 19,071.26

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Solution

The fourth proportional to 71,661.72, 107,495.01 and 19,071.26 is: 28,607.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,661.72 : 107,495.01 = 19,071.26 : x
  2. Step 2: Convert to fraction form
    71,661.72/107,495.01 = 19,071.26/x
  3. Step 3: Cross multiply
    71,661.72x = 107,495.01 × 19,071.26
  4. Step 4: Simplify right side
    71,661.72x = 2,050,064,746.94
  5. Step 5: Solve for x
    x = 2,050,064,746.94/71,661.72
  6. Step 6: Final answer
    x = 28,607.53

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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.