Finding the Fourth Proportional to 98,160,678.72, 135,467,797.20 and 54,107,578.20
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Solution
The fourth proportional to 98,160,678.72, 135,467,797.20 and 54,107,578.20 is: 74,671,798.59
Step by Step Solution
- Step 1: Write the proportion equation
98,160,678.72 : 135,467,797.20 = 54,107,578.20 : x - Step 2: Convert to fraction form
98,160,678.72/135,467,797.20 = 54,107,578.20/x - Step 3: Cross multiply
98,160,678.72x = 135,467,797.20 × 54,107,578.20 - Step 4: Simplify right side
98,160,678.72x = 7,329,834,430,580,741 - Step 5: Solve for x
x = 7,329,834,430,580,741/98,160,678.72 - Step 6: Final answer
x = 74,671,798.59
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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.