Finding the Fourth Proportional to 77,294,495.26, 106,665,774.70 and 42,486,815.62
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Solution
The fourth proportional to 77,294,495.26, 106,665,774.70 and 42,486,815.62 is: 58,631,459.94
Step by Step Solution
- Step 1: Write the proportion equation
77,294,495.26 : 106,665,774.70 = 42,486,815.62 : x - Step 2: Convert to fraction form
77,294,495.26/106,665,774.70 = 42,486,815.62/x - Step 3: Cross multiply
77,294,495.26x = 106,665,774.70 × 42,486,815.62 - Step 4: Simplify right side
77,294,495.26x = 4,531,889,101,897,598 - Step 5: Solve for x
x = 4,531,889,101,897,598/77,294,495.26 - Step 6: Final answer
x = 58,631,459.94
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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.