Home / 86,501.73-129,737.62-39,105.80

Finding the Fourth Proportional to 86,501.73, 129,737.62 and 39,105.80

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Solution

The fourth proportional to 86,501.73, 129,737.62 and 39,105.80 is: 58,651.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,501.73 : 129,737.62 = 39,105.80 : x
  2. Step 2: Convert to fraction form
    86,501.73/129,737.62 = 39,105.80/x
  3. Step 3: Cross multiply
    86,501.73x = 129,737.62 × 39,105.80
  4. Step 4: Simplify right side
    86,501.73x = 5,073,493,420.20
  5. Step 5: Solve for x
    x = 5,073,493,420.20/86,501.73
  6. Step 6: Final answer
    x = 58,651.93

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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.