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Finding the Fourth Proportional to 71,203.93, 98,261.93 and 38,938.69

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Solution

The fourth proportional to 71,203.93, 98,261.93 and 38,938.69 is: 53,735.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,203.93 : 98,261.93 = 38,938.69 : x
  2. Step 2: Convert to fraction form
    71,203.93/98,261.93 = 38,938.69/x
  3. Step 3: Cross multiply
    71,203.93x = 98,261.93 × 38,938.69
  4. Step 4: Simplify right side
    71,203.93x = 3,826,190,831.07
  5. Step 5: Solve for x
    x = 3,826,190,831.07/71,203.93
  6. Step 6: Final answer
    x = 53,735.67

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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.