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Finding the Fourth Proportional to 69,063.53, 103,666.37 and 42,830.46

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Solution

The fourth proportional to 69,063.53, 103,666.37 and 42,830.46 is: 64,289.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,063.53 : 103,666.37 = 42,830.46 : x
  2. Step 2: Convert to fraction form
    69,063.53/103,666.37 = 42,830.46/x
  3. Step 3: Cross multiply
    69,063.53x = 103,666.37 × 42,830.46
  4. Step 4: Simplify right side
    69,063.53x = 4,440,078,313.63
  5. Step 5: Solve for x
    x = 4,440,078,313.63/69,063.53
  6. Step 6: Final answer
    x = 64,289.77

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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.