Finding the Fourth Proportional to 77,372,316.13, 106,926,993.27 and 63,411,651.69
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Solution
The fourth proportional to 77,372,316.13, 106,926,993.27 and 63,411,651.69 is: 87,633,634.26
Step by Step Solution
- Step 1: Write the proportion equation
77,372,316.13 : 106,926,993.27 = 63,411,651.69 : x - Step 2: Convert to fraction form
77,372,316.13/106,926,993.27 = 63,411,651.69/x - Step 3: Cross multiply
77,372,316.13x = 106,926,993.27 × 63,411,651.69 - Step 4: Simplify right side
77,372,316.13x = 6,780,417,252,961,579 - Step 5: Solve for x
x = 6,780,417,252,961,579/77,372,316.13 - Step 6: Final answer
x = 87,633,634.26
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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.