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Finding the Fourth Proportional to 30,065.94, 45,098.91 and 18,989.46

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Solution

The fourth proportional to 30,065.94, 45,098.91 and 18,989.46 is: 28,484.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,065.94 : 45,098.91 = 18,989.46 : x
  2. Step 2: Convert to fraction form
    30,065.94/45,098.91 = 18,989.46/x
  3. Step 3: Cross multiply
    30,065.94x = 45,098.91 × 18,989.46
  4. Step 4: Simplify right side
    30,065.94x = 856,403,947.49
  5. Step 5: Solve for x
    x = 856,403,947.49/30,065.94
  6. Step 6: Final answer
    x = 28,484.19

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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.