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Finding the Fourth Proportional to 30,448.48, 45,678.72 and 10,729.12

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Solution

The fourth proportional to 30,448.48, 45,678.72 and 10,729.12 is: 16,095.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,448.48 : 45,678.72 = 10,729.12 : x
  2. Step 2: Convert to fraction form
    30,448.48/45,678.72 = 10,729.12/x
  3. Step 3: Cross multiply
    30,448.48x = 45,678.72 × 10,729.12
  4. Step 4: Simplify right side
    30,448.48x = 490,092,468.33
  5. Step 5: Solve for x
    x = 490,092,468.33/30,448.48
  6. Step 6: Final answer
    x = 16,095.79

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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.