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Finding the Fourth Proportional to 70,975.78, 106,463.72 and 39,832.90

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Solution

The fourth proportional to 70,975.78, 106,463.72 and 39,832.90 is: 59,749.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,975.78 : 106,463.72 = 39,832.90 : x
  2. Step 2: Convert to fraction form
    70,975.78/106,463.72 = 39,832.90/x
  3. Step 3: Cross multiply
    70,975.78x = 106,463.72 × 39,832.90
  4. Step 4: Simplify right side
    70,975.78x = 4,240,758,513.22
  5. Step 5: Solve for x
    x = 4,240,758,513.22/70,975.78
  6. Step 6: Final answer
    x = 59,749.38

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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.