Home / 86,518.86-129,715.94-53,169.98

Finding the Fourth Proportional to 86,518.86, 129,715.94 and 53,169.98

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Solution

The fourth proportional to 86,518.86, 129,715.94 and 53,169.98 is: 79,716.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,518.86 : 129,715.94 = 53,169.98 : x
  2. Step 2: Convert to fraction form
    86,518.86/129,715.94 = 53,169.98/x
  3. Step 3: Cross multiply
    86,518.86x = 129,715.94 × 53,169.98
  4. Step 4: Simplify right side
    86,518.86x = 6,896,993,935.48
  5. Step 5: Solve for x
    x = 6,896,993,935.48/86,518.86
  6. Step 6: Final answer
    x = 79,716.65

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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.