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Finding the Fourth Proportional to 30,122.42, 45,186.24 and 7,935.62

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Solution

The fourth proportional to 30,122.42, 45,186.24 and 7,935.62 is: 11,904.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,122.42 : 45,186.24 = 7,935.62 : x
  2. Step 2: Convert to fraction form
    30,122.42/45,186.24 = 7,935.62/x
  3. Step 3: Cross multiply
    30,122.42x = 45,186.24 × 7,935.62
  4. Step 4: Simplify right side
    30,122.42x = 358,580,829.87
  5. Step 5: Solve for x
    x = 358,580,829.87/30,122.42
  6. Step 6: Final answer
    x = 11,904.12

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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.