Finding the Fourth Proportional to 76,315.98, 105,316.82 and 42,324.99
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Solution
The fourth proportional to 76,315.98, 105,316.82 and 42,324.99 is: 58,408.91
Step by Step Solution
- Step 1: Write the proportion equation
76,315.98 : 105,316.82 = 42,324.99 : x - Step 2: Convert to fraction form
76,315.98/105,316.82 = 42,324.99/x - Step 3: Cross multiply
76,315.98x = 105,316.82 × 42,324.99 - Step 4: Simplify right side
76,315.98x = 4,457,533,143.57 - Step 5: Solve for x
x = 4,457,533,143.57/76,315.98 - Step 6: Final answer
x = 58,408.91
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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.