Finding the Fourth Proportional to 74,316.16, 102,552.80 and 40,781.44
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Solution
The fourth proportional to 74,316.16, 102,552.80 and 40,781.44 is: 56,276.47
Step by Step Solution
- Step 1: Write the proportion equation
74,316.16 : 102,552.80 = 40,781.44 : x - Step 2: Convert to fraction form
74,316.16/102,552.80 = 40,781.44/x - Step 3: Cross multiply
74,316.16x = 102,552.80 × 40,781.44 - Step 4: Simplify right side
74,316.16x = 4,182,250,860.03 - Step 5: Solve for x
x = 4,182,250,860.03/74,316.16 - Step 6: Final answer
x = 56,276.47
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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.