Home / 86,171.37-129,279.84-39,413.31

Finding the Fourth Proportional to 86,171.37, 129,279.84 and 39,413.31

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Solution

The fourth proportional to 86,171.37, 129,279.84 and 39,413.31 is: 59,130.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,171.37 : 129,279.84 = 39,413.31 : x
  2. Step 2: Convert to fraction form
    86,171.37/129,279.84 = 39,413.31/x
  3. Step 3: Cross multiply
    86,171.37x = 129,279.84 × 39,413.31
  4. Step 4: Simplify right side
    86,171.37x = 5,095,346,410.67
  5. Step 5: Solve for x
    x = 5,095,346,410.67/86,171.37
  6. Step 6: Final answer
    x = 59,130.39

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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.