Finding the Fourth Proportional to 92,829.84, 138,929.40 and 57,313.80
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Solution
The fourth proportional to 92,829.84, 138,929.40 and 57,313.80 is: 85,775.99
Step by Step Solution
- Step 1: Write the proportion equation
92,829.84 : 138,929.40 = 57,313.80 : x - Step 2: Convert to fraction form
92,829.84/138,929.40 = 57,313.80/x - Step 3: Cross multiply
92,829.84x = 138,929.40 × 57,313.80 - Step 4: Simplify right side
92,829.84x = 7,962,571,845.72 - Step 5: Solve for x
x = 7,962,571,845.72/92,829.84 - Step 6: Final answer
x = 85,775.99
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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.