Finding the Fourth Proportional to 75,312,816.09, 103,925,982.45 and 42,266,682.94
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Solution
The fourth proportional to 75,312,816.09, 103,925,982.45 and 42,266,682.94 is: 58,324,821.42
Step by Step Solution
- Step 1: Write the proportion equation
75,312,816.09 : 103,925,982.45 = 42,266,682.94 : x - Step 2: Convert to fraction form
75,312,816.09/103,925,982.45 = 42,266,682.94/x - Step 3: Cross multiply
75,312,816.09x = 103,925,982.45 × 42,266,682.94 - Step 4: Simplify right side
75,312,816.09x = 4,392,606,549,442,154.50 - Step 5: Solve for x
x = 4,392,606,549,442,154.50/75,312,816.09 - Step 6: Final answer
x = 58,324,821.42
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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.