Finding the Fourth Proportional to 103,423,563.42, 142,725,480.24 and 57,015,478.09
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Solution
The fourth proportional to 103,423,563.42, 142,725,480.24 and 57,015,478.09 is: 78,681,890.49
Step by Step Solution
- Step 1: Write the proportion equation
103,423,563.42 : 142,725,480.24 = 57,015,478.09 : x - Step 2: Convert to fraction form
103,423,563.42/142,725,480.24 = 57,015,478.09/x - Step 3: Cross multiply
103,423,563.42x = 142,725,480.24 × 57,015,478.09 - Step 4: Simplify right side
103,423,563.42x = 8,137,561,491,508,449 - Step 5: Solve for x
x = 8,137,561,491,508,449/103,423,563.42 - Step 6: Final answer
x = 78,681,890.49
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.