Finding the Fourth Proportional to 98,172,697.41, 135,478,732.68 and 54,118,729.67
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Solution
The fourth proportional to 98,172,697.41, 135,478,732.68 and 54,118,729.67 is: 74,684,073.09
Step by Step Solution
- Step 1: Write the proportion equation
98,172,697.41 : 135,478,732.68 = 54,118,729.67 : x - Step 2: Convert to fraction form
98,172,697.41/135,478,732.68 = 54,118,729.67/x - Step 3: Cross multiply
98,172,697.41x = 135,478,732.68 × 54,118,729.67 - Step 4: Simplify right side
98,172,697.41x = 7,331,936,909,265,721 - Step 5: Solve for x
x = 7,331,936,909,265,721/98,172,697.41 - Step 6: Final answer
x = 74,684,073.09
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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.