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Finding the Fourth Proportional to 71,119.68, 98,148.14 and 40,905.01

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Solution

The fourth proportional to 71,119.68, 98,148.14 and 40,905.01 is: 56,450.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,119.68 : 98,148.14 = 40,905.01 : x
  2. Step 2: Convert to fraction form
    71,119.68/98,148.14 = 40,905.01/x
  3. Step 3: Cross multiply
    71,119.68x = 98,148.14 × 40,905.01
  4. Step 4: Simplify right side
    71,119.68x = 4,014,750,648.18
  5. Step 5: Solve for x
    x = 4,014,750,648.18/71,119.68
  6. Step 6: Final answer
    x = 56,450.63

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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.