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Finding the Fourth Proportional to 72,707.46, 100,741.14 and 71,132.82

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Solution

The fourth proportional to 72,707.46, 100,741.14 and 71,132.82 is: 98,559.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,707.46 : 100,741.14 = 71,132.82 : x
  2. Step 2: Convert to fraction form
    72,707.46/100,741.14 = 71,132.82/x
  3. Step 3: Cross multiply
    72,707.46x = 100,741.14 × 71,132.82
  4. Step 4: Simplify right side
    72,707.46x = 7,166,001,378.21
  5. Step 5: Solve for x
    x = 7,166,001,378.21/72,707.46
  6. Step 6: Final answer
    x = 98,559.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.