Finding the Fourth Proportional to 102,971.60, 142,102.32 and 62,687.08
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Solution
The fourth proportional to 102,971.60, 142,102.32 and 62,687.08 is: 86,509.09
Step by Step Solution
- Step 1: Write the proportion equation
102,971.60 : 142,102.32 = 62,687.08 : x - Step 2: Convert to fraction form
102,971.60/142,102.32 = 62,687.08/x - Step 3: Cross multiply
102,971.60x = 142,102.32 × 62,687.08 - Step 4: Simplify right side
102,971.60x = 8,907,979,502.03 - Step 5: Solve for x
x = 8,907,979,502.03/102,971.60 - Step 6: Final answer
x = 86,509.09
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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.