Home / 68,815.76-103,223.54-45,436.64

Finding the Fourth Proportional to 68,815.76, 103,223.54 and 45,436.64

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Solution

The fourth proportional to 68,815.76, 103,223.54 and 45,436.64 is: 68,154.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,815.76 : 103,223.54 = 45,436.64 : x
  2. Step 2: Convert to fraction form
    68,815.76/103,223.54 = 45,436.64/x
  3. Step 3: Cross multiply
    68,815.76x = 103,223.54 × 45,436.64
  4. Step 4: Simplify right side
    68,815.76x = 4,690,130,826.51
  5. Step 5: Solve for x
    x = 4,690,130,826.51/68,815.76
  6. Step 6: Final answer
    x = 68,154.89

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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.