Home / 77,310.40-115,965.60-59,792.80

Finding the Fourth Proportional to 77,310.40, 115,965.60 and 59,792.80

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Solution

The fourth proportional to 77,310.40, 115,965.60 and 59,792.80 is: 89,689.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,310.40 : 115,965.60 = 59,792.80 : x
  2. Step 2: Convert to fraction form
    77,310.40/115,965.60 = 59,792.80/x
  3. Step 3: Cross multiply
    77,310.40x = 115,965.60 × 59,792.80
  4. Step 4: Simplify right side
    77,310.40x = 6,933,907,927.68
  5. Step 5: Solve for x
    x = 6,933,907,927.68/77,310.40
  6. Step 6: Final answer
    x = 89,689.20

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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.