Finding the Fourth Proportional to 98,230.16, 135,558.56 and 55,788.99
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Solution
The fourth proportional to 98,230.16, 135,558.56 and 55,788.99 is: 76,989.34
Step by Step Solution
- Step 1: Write the proportion equation
98,230.16 : 135,558.56 = 55,788.99 : x - Step 2: Convert to fraction form
98,230.16/135,558.56 = 55,788.99/x - Step 3: Cross multiply
98,230.16x = 135,558.56 × 55,788.99 - Step 4: Simplify right side
98,230.16x = 7,562,674,869.31 - Step 5: Solve for x
x = 7,562,674,869.31/98,230.16 - Step 6: Final answer
x = 76,989.34
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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.