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Finding the Fourth Proportional to 85,635.84, 118,178.94 and 47,398.54

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Solution

The fourth proportional to 85,635.84, 118,178.94 and 47,398.54 is: 65,410.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,635.84 : 118,178.94 = 47,398.54 : x
  2. Step 2: Convert to fraction form
    85,635.84/118,178.94 = 47,398.54/x
  3. Step 3: Cross multiply
    85,635.84x = 118,178.94 × 47,398.54
  4. Step 4: Simplify right side
    85,635.84x = 5,601,509,214.75
  5. Step 5: Solve for x
    x = 5,601,509,214.75/85,635.84
  6. Step 6: Final answer
    x = 65,410.80

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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.