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Finding the Fourth Proportional to 72,657.41, 100,266.36 and 42,447.34

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Solution

The fourth proportional to 72,657.41, 100,266.36 and 42,447.34 is: 58,576.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,657.41 : 100,266.36 = 42,447.34 : x
  2. Step 2: Convert to fraction form
    72,657.41/100,266.36 = 42,447.34/x
  3. Step 3: Cross multiply
    72,657.41x = 100,266.36 × 42,447.34
  4. Step 4: Simplify right side
    72,657.41x = 4,256,040,239.64
  5. Step 5: Solve for x
    x = 4,256,040,239.64/72,657.41
  6. Step 6: Final answer
    x = 58,576.83

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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.