Finding the Fourth Proportional to 83,699.18, 115,549.90 and 64,536.94
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Solution
The fourth proportional to 83,699.18, 115,549.90 and 64,536.94 is: 89,095.70
Step by Step Solution
- Step 1: Write the proportion equation
83,699.18 : 115,549.90 = 64,536.94 : x - Step 2: Convert to fraction form
83,699.18/115,549.90 = 64,536.94/x - Step 3: Cross multiply
83,699.18x = 115,549.90 × 64,536.94 - Step 4: Simplify right side
83,699.18x = 7,457,236,963.31 - Step 5: Solve for x
x = 7,457,236,963.31/83,699.18 - Step 6: Final answer
x = 89,095.70
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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.