Finding the Fourth Proportional to 103,459.75, 142,774.62 and 58,747.75
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Solution
The fourth proportional to 103,459.75, 142,774.62 and 58,747.75 is: 81,071.99
Step by Step Solution
- Step 1: Write the proportion equation
103,459.75 : 142,774.62 = 58,747.75 : x - Step 2: Convert to fraction form
103,459.75/142,774.62 = 58,747.75/x - Step 3: Cross multiply
103,459.75x = 142,774.62 × 58,747.75 - Step 4: Simplify right side
103,459.75x = 8,387,687,682.11 - Step 5: Solve for x
x = 8,387,687,682.11/103,459.75 - Step 6: Final answer
x = 81,071.99
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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.