Home / 86,824.40-130,279.80-49,413.20

Finding the Fourth Proportional to 86,824.40, 130,279.80 and 49,413.20

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Solution

The fourth proportional to 86,824.40, 130,279.80 and 49,413.20 is: 74,144.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,824.40 : 130,279.80 = 49,413.20 : x
  2. Step 2: Convert to fraction form
    86,824.40/130,279.80 = 49,413.20/x
  3. Step 3: Cross multiply
    86,824.40x = 130,279.80 × 49,413.20
  4. Step 4: Simplify right side
    86,824.40x = 6,437,541,813.36
  5. Step 5: Solve for x
    x = 6,437,541,813.36/86,824.40
  6. Step 6: Final answer
    x = 74,144.39

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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.