Finding the Fourth Proportional to 98,489,954.60, 135,845,643.78 and 69,127,838.12
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Solution
The fourth proportional to 98,489,954.60, 135,845,643.78 and 69,127,838.12 is: 95,346,938.79
Step by Step Solution
- Step 1: Write the proportion equation
98,489,954.60 : 135,845,643.78 = 69,127,838.12 : x - Step 2: Convert to fraction form
98,489,954.60/135,845,643.78 = 69,127,838.12/x - Step 3: Cross multiply
98,489,954.60x = 135,845,643.78 × 69,127,838.12 - Step 4: Simplify right side
98,489,954.60x = 9,390,715,672,531,026 - Step 5: Solve for x
x = 9,390,715,672,531,026/98,489,954.60 - Step 6: Final answer
x = 95,346,938.79
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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.