Finding the Fourth Proportional to 38,779,501.96, 53,515,699.66 and 21,376,137.81
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Solution
The fourth proportional to 38,779,501.96, 53,515,699.66 and 21,376,137.81 is: 29,499,062.99
Step by Step Solution
- Step 1: Write the proportion equation
38,779,501.96 : 53,515,699.66 = 21,376,137.81 : x - Step 2: Convert to fraction form
38,779,501.96/53,515,699.66 = 21,376,137.81/x - Step 3: Cross multiply
38,779,501.96x = 53,515,699.66 × 21,376,137.81 - Step 4: Simplify right side
38,779,501.96x = 1,143,958,971,037,745.75 - Step 5: Solve for x
x = 1,143,958,971,037,745.75/38,779,501.96 - Step 6: Final answer
x = 29,499,062.99
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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.