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Finding the Fourth Proportional to 72,761.16, 100,401.42 and 45,893.52

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Solution

The fourth proportional to 72,761.16, 100,401.42 and 45,893.52 is: 63,327.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,761.16 : 100,401.42 = 45,893.52 : x
  2. Step 2: Convert to fraction form
    72,761.16/100,401.42 = 45,893.52/x
  3. Step 3: Cross multiply
    72,761.16x = 100,401.42 × 45,893.52
  4. Step 4: Simplify right side
    72,761.16x = 4,607,774,576.80
  5. Step 5: Solve for x
    x = 4,607,774,576.80/72,761.16
  6. Step 6: Final answer
    x = 63,327.39

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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.