Home / 86,379.30-129,606.58-30,259.74

Finding the Fourth Proportional to 86,379.30, 129,606.58 and 30,259.74

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Solution

The fourth proportional to 86,379.30, 129,606.58 and 30,259.74 is: 45,402.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,379.30 : 129,606.58 = 30,259.74 : x
  2. Step 2: Convert to fraction form
    86,379.30/129,606.58 = 30,259.74/x
  3. Step 3: Cross multiply
    86,379.30x = 129,606.58 × 30,259.74
  4. Step 4: Simplify right side
    86,379.30x = 3,921,861,413.09
  5. Step 5: Solve for x
    x = 3,921,861,413.09/86,379.30
  6. Step 6: Final answer
    x = 45,402.79

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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.