Finding the Fourth Proportional to 74,064.13, 102,208.56 and 40,530.13
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Solution
The fourth proportional to 74,064.13, 102,208.56 and 40,530.13 is: 55,931.61
Step by Step Solution
- Step 1: Write the proportion equation
74,064.13 : 102,208.56 = 40,530.13 : x - Step 2: Convert to fraction form
74,064.13/102,208.56 = 40,530.13/x - Step 3: Cross multiply
74,064.13x = 102,208.56 × 40,530.13 - Step 4: Simplify right side
74,064.13x = 4,142,526,223.91 - Step 5: Solve for x
x = 4,142,526,223.91/74,064.13 - Step 6: Final answer
x = 55,931.61
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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.