Finding the Fourth Proportional to 98,172,701.91, 135,478,738.89 and 54,118,734.12
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Solution
The fourth proportional to 98,172,701.91, 135,478,738.89 and 54,118,734.12 is: 74,684,079.24
Step by Step Solution
- Step 1: Write the proportion equation
98,172,701.91 : 135,478,738.89 = 54,118,734.12 : x - Step 2: Convert to fraction form
98,172,701.91/135,478,738.89 = 54,118,734.12/x - Step 3: Cross multiply
98,172,701.91x = 135,478,738.89 × 54,118,734.12 - Step 4: Simplify right side
98,172,701.91x = 7,331,937,848,900,813 - Step 5: Solve for x
x = 7,331,937,848,900,813/98,172,701.91 - Step 6: Final answer
x = 74,684,079.24
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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.