Finding the Fourth Proportional to 74,069.12, 102,090.88 and 56,158.08
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Solution
The fourth proportional to 74,069.12, 102,090.88 and 56,158.08 is: 77,403.75
Step by Step Solution
- Step 1: Write the proportion equation
74,069.12 : 102,090.88 = 56,158.08 : x - Step 2: Convert to fraction form
74,069.12/102,090.88 = 56,158.08/x - Step 3: Cross multiply
74,069.12x = 102,090.88 × 56,158.08 - Step 4: Simplify right side
74,069.12x = 5,733,227,806.31 - Step 5: Solve for x
x = 5,733,227,806.31/74,069.12 - Step 6: Final answer
x = 77,403.75
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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.