Finding the Fourth Proportional to 112,711.16, 155,539.50 and 62,409.08
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Solution
The fourth proportional to 112,711.16, 155,539.50 and 62,409.08 is: 86,123.48
Step by Step Solution
- Step 1: Write the proportion equation
112,711.16 : 155,539.50 = 62,409.08 : x - Step 2: Convert to fraction form
112,711.16/155,539.50 = 62,409.08/x - Step 3: Cross multiply
112,711.16x = 155,539.50 × 62,409.08 - Step 4: Simplify right side
112,711.16x = 9,707,077,098.66 - Step 5: Solve for x
x = 9,707,077,098.66/112,711.16 - Step 6: Final answer
x = 86,123.48
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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.