Finding the Fourth Proportional to 86,165.56, 129,248.38 and 39,385.63
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Solution
The fourth proportional to 86,165.56, 129,248.38 and 39,385.63 is: 59,078.46
Step by Step Solution
- Step 1: Write the proportion equation
86,165.56 : 129,248.38 = 39,385.63 : x - Step 2: Convert to fraction form
86,165.56/129,248.38 = 39,385.63/x - Step 3: Cross multiply
86,165.56x = 129,248.38 × 39,385.63 - Step 4: Simplify right side
86,165.56x = 5,090,528,226.54 - Step 5: Solve for x
x = 5,090,528,226.54/86,165.56 - Step 6: Final answer
x = 59,078.46
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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.