Finding the Fourth Proportional to 74,102,108.56, 102,307,391.74 and 47,686,357.78
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Solution
The fourth proportional to 74,102,108.56, 102,307,391.74 and 47,686,357.78 is: 65,837,085.89
Step by Step Solution
- Step 1: Write the proportion equation
74,102,108.56 : 102,307,391.74 = 47,686,357.78 : x - Step 2: Convert to fraction form
74,102,108.56/102,307,391.74 = 47,686,357.78/x - Step 3: Cross multiply
74,102,108.56x = 102,307,391.74 × 47,686,357.78 - Step 4: Simplify right side
74,102,108.56x = 4,878,666,886,052,257 - Step 5: Solve for x
x = 4,878,666,886,052,257/74,102,108.56 - Step 6: Final answer
x = 65,837,085.89
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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.