Finding the Fourth Proportional to 77,372,315.63, 106,926,992.58 and 63,411,651.19
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Solution
The fourth proportional to 77,372,315.63, 106,926,992.58 and 63,411,651.19 is: 87,633,633.57
Step by Step Solution
- Step 1: Write the proportion equation
77,372,315.63 : 106,926,992.58 = 63,411,651.19 : x - Step 2: Convert to fraction form
77,372,315.63/106,926,992.58 = 63,411,651.19/x - Step 3: Cross multiply
77,372,315.63x = 106,926,992.58 × 63,411,651.19 - Step 4: Simplify right side
77,372,315.63x = 6,780,417,155,585,514 - Step 5: Solve for x
x = 6,780,417,155,585,514/77,372,315.63 - Step 6: Final answer
x = 87,633,633.57
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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.