Home / 77,136.83-106,458.68-43,147.20

Finding the Fourth Proportional to 77,136.83, 106,458.68 and 43,147.20

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Solution

The fourth proportional to 77,136.83, 106,458.68 and 43,147.20 is: 59,548.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,136.83 : 106,458.68 = 43,147.20 : x
  2. Step 2: Convert to fraction form
    77,136.83/106,458.68 = 43,147.20/x
  3. Step 3: Cross multiply
    77,136.83x = 106,458.68 × 43,147.20
  4. Step 4: Simplify right side
    77,136.83x = 4,593,393,741.96
  5. Step 5: Solve for x
    x = 4,593,393,741.96/77,136.83
  6. Step 6: Final answer
    x = 59,548.65

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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.