Home / 77,880.49-116,819.06-21,719.10

Finding the Fourth Proportional to 77,880.49, 116,819.06 and 21,719.10

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Solution

The fourth proportional to 77,880.49, 116,819.06 and 21,719.10 is: 32,578.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,880.49 : 116,819.06 = 21,719.10 : x
  2. Step 2: Convert to fraction form
    77,880.49/116,819.06 = 21,719.10/x
  3. Step 3: Cross multiply
    77,880.49x = 116,819.06 × 21,719.10
  4. Step 4: Simplify right side
    77,880.49x = 2,537,204,737.45
  5. Step 5: Solve for x
    x = 2,537,204,737.45/77,880.49
  6. Step 6: Final answer
    x = 32,578.18

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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.