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Finding the Fourth Proportional to 30,391.45, 45,582.62 and 9,612.25

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Solution

The fourth proportional to 30,391.45, 45,582.62 and 9,612.25 is: 14,416.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,391.45 : 45,582.62 = 9,612.25 : x
  2. Step 2: Convert to fraction form
    30,391.45/45,582.62 = 9,612.25/x
  3. Step 3: Cross multiply
    30,391.45x = 45,582.62 × 9,612.25
  4. Step 4: Simplify right side
    30,391.45x = 438,151,491.03
  5. Step 5: Solve for x
    x = 438,151,491.03/30,391.45
  6. Step 6: Final answer
    x = 14,416.93

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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.