Home / 312,727.18-469,090.88-76,068.40

Finding the Fourth Proportional to 312,727.18, 469,090.88 and 76,068.40

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Solution

The fourth proportional to 312,727.18, 469,090.88 and 76,068.40 is: 114,102.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,727.18 : 469,090.88 = 76,068.40 : x
  2. Step 2: Convert to fraction form
    312,727.18/469,090.88 = 76,068.40/x
  3. Step 3: Cross multiply
    312,727.18x = 469,090.88 × 76,068.40
  4. Step 4: Simplify right side
    312,727.18x = 35,682,992,696.19
  5. Step 5: Solve for x
    x = 35,682,992,696.19/312,727.18
  6. Step 6: Final answer
    x = 114,102.63

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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.