Home / 78,618.65-117,946.43-22,459.56

Finding the Fourth Proportional to 78,618.65, 117,946.43 and 22,459.56

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Solution

The fourth proportional to 78,618.65, 117,946.43 and 22,459.56 is: 33,694.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,618.65 : 117,946.43 = 22,459.56 : x
  2. Step 2: Convert to fraction form
    78,618.65/117,946.43 = 22,459.56/x
  3. Step 3: Cross multiply
    78,618.65x = 117,946.43 × 22,459.56
  4. Step 4: Simplify right side
    78,618.65x = 2,649,024,809.07
  5. Step 5: Solve for x
    x = 2,649,024,809.07/78,618.65
  6. Step 6: Final answer
    x = 33,694.61

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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.