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Finding the Fourth Proportional to 85,594.76, 128,408.22 and 38,850.92

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Solution

The fourth proportional to 85,594.76, 128,408.22 and 38,850.92 is: 58,283.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,594.76 : 128,408.22 = 38,850.92 : x
  2. Step 2: Convert to fraction form
    85,594.76/128,408.22 = 38,850.92/x
  3. Step 3: Cross multiply
    85,594.76x = 128,408.22 × 38,850.92
  4. Step 4: Simplify right side
    85,594.76x = 4,988,777,482.56
  5. Step 5: Solve for x
    x = 4,988,777,482.56/85,594.76
  6. Step 6: Final answer
    x = 58,283.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.