Finding the Fourth Proportional to 77,985,538.50, 107,623,406.16 and 43,178,228.97
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Solution
The fourth proportional to 77,985,538.50, 107,623,406.16 and 43,178,228.97 is: 59,587,817.99
Step by Step Solution
- Step 1: Write the proportion equation
77,985,538.50 : 107,623,406.16 = 43,178,228.97 : x - Step 2: Convert to fraction form
77,985,538.50/107,623,406.16 = 43,178,228.97/x - Step 3: Cross multiply
77,985,538.50x = 107,623,406.16 × 43,178,228.97 - Step 4: Simplify right side
77,985,538.50x = 4,646,988,073,707,788 - Step 5: Solve for x
x = 4,646,988,073,707,788/77,985,538.50 - Step 6: Final answer
x = 59,587,817.99
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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.