Home / 77,010.84-115,319.16-43,680.96

Finding the Fourth Proportional to 77,010.84, 115,319.16 and 43,680.96

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Solution

The fourth proportional to 77,010.84, 115,319.16 and 43,680.96 is: 65,409.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,010.84 : 115,319.16 = 43,680.96 : x
  2. Step 2: Convert to fraction form
    77,010.84/115,319.16 = 43,680.96/x
  3. Step 3: Cross multiply
    77,010.84x = 115,319.16 × 43,680.96
  4. Step 4: Simplify right side
    77,010.84x = 5,037,251,615.19
  5. Step 5: Solve for x
    x = 5,037,251,615.19/77,010.84
  6. Step 6: Final answer
    x = 65,409.64

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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.