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Finding the Fourth Proportional to 71,466.93, 98,624.66 and 39,638.79

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Solution

The fourth proportional to 71,466.93, 98,624.66 and 39,638.79 is: 54,701.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,466.93 : 98,624.66 = 39,638.79 : x
  2. Step 2: Convert to fraction form
    71,466.93/98,624.66 = 39,638.79/x
  3. Step 3: Cross multiply
    71,466.93x = 98,624.66 × 39,638.79
  4. Step 4: Simplify right side
    71,466.93x = 3,909,362,186.56
  5. Step 5: Solve for x
    x = 3,909,362,186.56/71,466.93
  6. Step 6: Final answer
    x = 54,701.69

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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.