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Finding the Fourth Proportional to 70,394.85, 105,329.84 and 69,607.53

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Solution

The fourth proportional to 70,394.85, 105,329.84 and 69,607.53 is: 104,151.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,394.85 : 105,329.84 = 69,607.53 : x
  2. Step 2: Convert to fraction form
    70,394.85/105,329.84 = 69,607.53/x
  3. Step 3: Cross multiply
    70,394.85x = 105,329.84 × 69,607.53
  4. Step 4: Simplify right side
    70,394.85x = 7,331,749,649.66
  5. Step 5: Solve for x
    x = 7,331,749,649.66/70,394.85
  6. Step 6: Final answer
    x = 104,151.79

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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.