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Finding the Fourth Proportional to 85,877.96, 118,507.41 and 47,639.03

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Solution

The fourth proportional to 85,877.96, 118,507.41 and 47,639.03 is: 65,739.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,877.96 : 118,507.41 = 47,639.03 : x
  2. Step 2: Convert to fraction form
    85,877.96/118,507.41 = 47,639.03/x
  3. Step 3: Cross multiply
    85,877.96x = 118,507.41 × 47,639.03
  4. Step 4: Simplify right side
    85,877.96x = 5,645,577,467.68
  5. Step 5: Solve for x
    x = 5,645,577,467.68/85,877.96
  6. Step 6: Final answer
    x = 65,739.54

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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.