Finding the Fourth Proportional to 112,678.88, 155,504.76 and 62,381.12
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Solution
The fourth proportional to 112,678.88, 155,504.76 and 62,381.12 is: 86,090.32
Step by Step Solution
- Step 1: Write the proportion equation
112,678.88 : 155,504.76 = 62,381.12 : x - Step 2: Convert to fraction form
112,678.88/155,504.76 = 62,381.12/x - Step 3: Cross multiply
112,678.88x = 155,504.76 × 62,381.12 - Step 4: Simplify right side
112,678.88x = 9,700,561,094.13 - Step 5: Solve for x
x = 9,700,561,094.13/112,678.88 - Step 6: Final answer
x = 86,090.32
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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.