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Finding the Fourth Proportional to 85,727.72, 118,285.12 and 51,741.72

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Solution

The fourth proportional to 85,727.72, 118,285.12 and 51,741.72 is: 71,392.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,727.72 : 118,285.12 = 51,741.72 : x
  2. Step 2: Convert to fraction form
    85,727.72/118,285.12 = 51,741.72/x
  3. Step 3: Cross multiply
    85,727.72x = 118,285.12 × 51,741.72
  4. Step 4: Simplify right side
    85,727.72x = 6,120,275,559.21
  5. Step 5: Solve for x
    x = 6,120,275,559.21/85,727.72
  6. Step 6: Final answer
    x = 71,392.03

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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.