Finding the Fourth Proportional to 99,426,940.19, 137,213,430.10 and 55,373,931.97
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Solution
The fourth proportional to 99,426,940.19, 137,213,430.10 and 55,373,931.97 is: 76,418,394.54
Step by Step Solution
- Step 1: Write the proportion equation
99,426,940.19 : 137,213,430.10 = 55,373,931.97 : x - Step 2: Convert to fraction form
99,426,940.19/137,213,430.10 = 55,373,931.97/x - Step 3: Cross multiply
99,426,940.19x = 137,213,430.10 × 55,373,931.97 - Step 4: Simplify right side
99,426,940.19x = 7,598,047,143,107,847 - Step 5: Solve for x
x = 7,598,047,143,107,847/99,426,940.19 - Step 6: Final answer
x = 76,418,394.54
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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.