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Finding the Fourth Proportional to 72,510.82, 100,063.40 and 40,243.56

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Solution

The fourth proportional to 72,510.82, 100,063.40 and 40,243.56 is: 55,535.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,510.82 : 100,063.40 = 40,243.56 : x
  2. Step 2: Convert to fraction form
    72,510.82/100,063.40 = 40,243.56/x
  3. Step 3: Cross multiply
    72,510.82x = 100,063.40 × 40,243.56
  4. Step 4: Simplify right side
    72,510.82x = 4,026,907,373.05
  5. Step 5: Solve for x
    x = 4,026,907,373.05/72,510.82
  6. Step 6: Final answer
    x = 55,535.26

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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.