Finding the Fourth Proportional to 98,429,323.12, 135,836,351.60 and 56,613,321.84
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Solution
The fourth proportional to 98,429,323.12, 135,836,351.60 and 56,613,321.84 is: 78,128,619.06
Step by Step Solution
- Step 1: Write the proportion equation
98,429,323.12 : 135,836,351.60 = 56,613,321.84 : x - Step 2: Convert to fraction form
98,429,323.12/135,836,351.60 = 56,613,321.84/x - Step 3: Cross multiply
98,429,323.12x = 135,836,351.60 × 56,613,321.84 - Step 4: Simplify right side
98,429,323.12x = 7,690,147,090,702,199 - Step 5: Solve for x
x = 7,690,147,090,702,199/98,429,323.12 - Step 6: Final answer
x = 78,128,619.06
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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.