Finding the Fourth Proportional to 76,172,526.74, 113,456,146.50 and 74,578,203.74
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Solution
The fourth proportional to 76,172,526.74, 113,456,146.50 and 74,578,203.74 is: 111,081,461.67
Step by Step Solution
- Step 1: Write the proportion equation
76,172,526.74 : 113,456,146.50 = 74,578,203.74 : x - Step 2: Convert to fraction form
76,172,526.74/113,456,146.50 = 74,578,203.74/x - Step 3: Cross multiply
76,172,526.74x = 113,456,146.50 × 74,578,203.74 - Step 4: Simplify right side
76,172,526.74x = 8,461,355,609,232,287 - Step 5: Solve for x
x = 8,461,355,609,232,287/76,172,526.74 - Step 6: Final answer
x = 111,081,461.67
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.