Finding the Fourth Proportional to 98,916,938.29, 136,521,714.50 and 54,878,124.84
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Solution
The fourth proportional to 98,916,938.29, 136,521,714.50 and 54,878,124.84 is: 75,740,877.36
Step by Step Solution
- Step 1: Write the proportion equation
98,916,938.29 : 136,521,714.50 = 54,878,124.84 : x - Step 2: Convert to fraction form
98,916,938.29/136,521,714.50 = 54,878,124.84/x - Step 3: Cross multiply
98,916,938.29x = 136,521,714.50 × 54,878,124.84 - Step 4: Simplify right side
98,916,938.29x = 7,492,055,691,701,839 - Step 5: Solve for x
x = 7,492,055,691,701,839/98,916,938.29 - Step 6: Final answer
x = 75,740,877.36
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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.