Finding the Fourth Proportional to 77,596,941.69, 107,086,364.70 and 42,316,676.88
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Solution
The fourth proportional to 77,596,941.69, 107,086,364.70 and 42,316,676.88 is: 58,398,423.89
Step by Step Solution
- Step 1: Write the proportion equation
77,596,941.69 : 107,086,364.70 = 42,316,676.88 : x - Step 2: Convert to fraction form
77,596,941.69/107,086,364.70 = 42,316,676.88/x - Step 3: Cross multiply
77,596,941.69x = 107,086,364.70 × 42,316,676.88 - Step 4: Simplify right side
77,596,941.69x = 4,531,539,093,263,739 - Step 5: Solve for x
x = 4,531,539,093,263,739/77,596,941.69 - Step 6: Final answer
x = 58,398,423.89
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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.