Finding the Fourth Proportional to 38,478,489.66, 53,101,174.86 and 21,958,285.32
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Solution
The fourth proportional to 38,478,489.66, 53,101,174.86 and 21,958,285.32 is: 30,302,924.02
Step by Step Solution
- Step 1: Write the proportion equation
38,478,489.66 : 53,101,174.86 = 21,958,285.32 : x - Step 2: Convert to fraction form
38,478,489.66/53,101,174.86 = 21,958,285.32/x - Step 3: Cross multiply
38,478,489.66x = 53,101,174.86 × 21,958,285.32 - Step 4: Simplify right side
38,478,489.66x = 1,166,010,748,403,091 - Step 5: Solve for x
x = 1,166,010,748,403,091/38,478,489.66 - Step 6: Final answer
x = 30,302,924.02
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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.