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Finding the Fourth Proportional to 30,039.94, 45,068.94 and 8,980.66

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Solution

The fourth proportional to 30,039.94, 45,068.94 and 8,980.66 is: 13,473.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,039.94 : 45,068.94 = 8,980.66 : x
  2. Step 2: Convert to fraction form
    30,039.94/45,068.94 = 8,980.66/x
  3. Step 3: Cross multiply
    30,039.94x = 45,068.94 × 8,980.66
  4. Step 4: Simplify right side
    30,039.94x = 404,749,009.79
  5. Step 5: Solve for x
    x = 404,749,009.79/30,039.94
  6. Step 6: Final answer
    x = 13,473.70

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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.