Finding the Fourth Proportional to 76,353.84, 105,368.40 and 42,817.68
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Solution
The fourth proportional to 76,353.84, 105,368.40 and 42,817.68 is: 59,088.45
Step by Step Solution
- Step 1: Write the proportion equation
76,353.84 : 105,368.40 = 42,817.68 : x - Step 2: Convert to fraction form
76,353.84/105,368.40 = 42,817.68/x - Step 3: Cross multiply
76,353.84x = 105,368.40 × 42,817.68 - Step 4: Simplify right side
76,353.84x = 4,511,630,433.31 - Step 5: Solve for x
x = 4,511,630,433.31/76,353.84 - Step 6: Final answer
x = 59,088.45
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1.5x scale
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.