Finding the Fourth Proportional to 39,112,129.16, 53,974,331.70 and 21,708,626.12
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Solution
The fourth proportional to 39,112,129.16, 53,974,331.70 and 21,708,626.12 is: 29,957,678.40
Step by Step Solution
- Step 1: Write the proportion equation
39,112,129.16 : 53,974,331.70 = 21,708,626.12 : x - Step 2: Convert to fraction form
39,112,129.16/53,974,331.70 = 21,708,626.12/x - Step 3: Cross multiply
39,112,129.16x = 53,974,331.70 × 21,708,626.12 - Step 4: Simplify right side
39,112,129.16x = 1,171,708,586,952,164 - Step 5: Solve for x
x = 1,171,708,586,952,164/39,112,129.16 - Step 6: Final answer
x = 29,957,678.40
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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.