Finding the Fourth Proportional to 74,386.88, 102,655.68 and 40,853.60
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Solution
The fourth proportional to 74,386.88, 102,655.68 and 40,853.60 is: 56,378.95
Step by Step Solution
- Step 1: Write the proportion equation
74,386.88 : 102,655.68 = 40,853.60 : x - Step 2: Convert to fraction form
74,386.88/102,655.68 = 40,853.60/x - Step 3: Cross multiply
74,386.88x = 102,655.68 × 40,853.60 - Step 4: Simplify right side
74,386.88x = 4,193,854,088.45 - Step 5: Solve for x
x = 4,193,854,088.45/74,386.88 - Step 6: Final answer
x = 56,378.95
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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.