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Finding the Fourth Proportional to 30,134.76, 45,202.82 and 7,950.38

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Solution

The fourth proportional to 30,134.76, 45,202.82 and 7,950.38 is: 11,925.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,134.76 : 45,202.82 = 7,950.38 : x
  2. Step 2: Convert to fraction form
    30,134.76/45,202.82 = 7,950.38/x
  3. Step 3: Cross multiply
    30,134.76x = 45,202.82 × 7,950.38
  4. Step 4: Simplify right side
    30,134.76x = 359,379,596.07
  5. Step 5: Solve for x
    x = 359,379,596.07/30,134.76
  6. Step 6: Final answer
    x = 11,925.75

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Half scale
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Double scale
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Similar ratio
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1.5x scale

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.