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Finding the Fourth Proportional to 71,657.49, 98,889.38 and 41,439.93

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Solution

The fourth proportional to 71,657.49, 98,889.38 and 41,439.93 is: 57,188.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,657.49 : 98,889.38 = 41,439.93 : x
  2. Step 2: Convert to fraction form
    71,657.49/98,889.38 = 41,439.93/x
  3. Step 3: Cross multiply
    71,657.49x = 98,889.38 × 41,439.93
  4. Step 4: Simplify right side
    71,657.49x = 4,097,968,984.94
  5. Step 5: Solve for x
    x = 4,097,968,984.94/71,657.49
  6. Step 6: Final answer
    x = 57,188.29

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1.5x scale

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.