Finding the Fourth Proportional to 105,484.55, 145,539.88 and 60,145.99
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Solution
The fourth proportional to 105,484.55, 145,539.88 and 60,145.99 is: 82,985.05
Step by Step Solution
- Step 1: Write the proportion equation
105,484.55 : 145,539.88 = 60,145.99 : x - Step 2: Convert to fraction form
105,484.55/145,539.88 = 60,145.99/x - Step 3: Cross multiply
105,484.55x = 145,539.88 × 60,145.99 - Step 4: Simplify right side
105,484.55x = 8,753,640,424.19 - Step 5: Solve for x
x = 8,753,640,424.19/105,484.55 - Step 6: Final answer
x = 82,985.05
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.