Finding the Fourth Proportional to 76,319.08, 114,484.09 and 20,158.63
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Solution
The fourth proportional to 76,319.08, 114,484.09 and 20,158.63 is: 30,239.38
Step by Step Solution
- Step 1: Write the proportion equation
76,319.08 : 114,484.09 = 20,158.63 : x - Step 2: Convert to fraction form
76,319.08/114,484.09 = 20,158.63/x - Step 3: Cross multiply
76,319.08x = 114,484.09 × 20,158.63 - Step 4: Simplify right side
76,319.08x = 2,307,842,074.59 - Step 5: Solve for x
x = 2,307,842,074.59/76,319.08 - Step 6: Final answer
x = 30,239.38
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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.