Finding the Fourth Proportional to 139,675.08, 209,489.74 and 38,449.48
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Solution
The fourth proportional to 139,675.08, 209,489.74 and 38,449.48 is: 57,667.92
Step by Step Solution
- Step 1: Write the proportion equation
139,675.08 : 209,489.74 = 38,449.48 : x - Step 2: Convert to fraction form
139,675.08/209,489.74 = 38,449.48/x - Step 3: Cross multiply
139,675.08x = 209,489.74 × 38,449.48 - Step 4: Simplify right side
139,675.08x = 8,054,771,568.34 - Step 5: Solve for x
x = 8,054,771,568.34/139,675.08 - Step 6: Final answer
x = 57,667.92
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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.