Home / 77,913.66-116,970.94-66,891.18

Finding the Fourth Proportional to 77,913.66, 116,970.94 and 66,891.18

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Solution

The fourth proportional to 77,913.66, 116,970.94 and 66,891.18 is: 100,423.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,913.66 : 116,970.94 = 66,891.18 : x
  2. Step 2: Convert to fraction form
    77,913.66/116,970.94 = 66,891.18/x
  3. Step 3: Cross multiply
    77,913.66x = 116,970.94 × 66,891.18
  4. Step 4: Simplify right side
    77,913.66x = 7,824,324,202.31
  5. Step 5: Solve for x
    x = 7,824,324,202.31/77,913.66
  6. Step 6: Final answer
    x = 100,423.01

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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.