Finding the Fourth Proportional to 39,872,069.96, 55,023,478.66 and 21,537,355.56
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Solution
The fourth proportional to 39,872,069.96, 55,023,478.66 and 21,537,355.56 is: 29,721,562.62
Step by Step Solution
- Step 1: Write the proportion equation
39,872,069.96 : 55,023,478.66 = 21,537,355.56 : x - Step 2: Convert to fraction form
39,872,069.96/55,023,478.66 = 21,537,355.56/x - Step 3: Cross multiply
39,872,069.96x = 55,023,478.66 × 21,537,355.56 - Step 4: Simplify right side
39,872,069.96x = 1,185,060,224,048,492.25 - Step 5: Solve for x
x = 1,185,060,224,048,492.25/39,872,069.96 - Step 6: Final answer
x = 29,721,562.62
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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.