Finding the Fourth Proportional to 102,428,791.92, 141,343,187.87 and 57,772,303.13
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Solution
The fourth proportional to 102,428,791.92, 141,343,187.87 and 57,772,303.13 is: 79,720,958.75
Step by Step Solution
- Step 1: Write the proportion equation
102,428,791.92 : 141,343,187.87 = 57,772,303.13 : x - Step 2: Convert to fraction form
102,428,791.92/141,343,187.87 = 57,772,303.13/x - Step 3: Cross multiply
102,428,791.92x = 141,343,187.87 × 57,772,303.13 - Step 4: Simplify right side
102,428,791.92x = 8,165,721,495,483,968 - Step 5: Solve for x
x = 8,165,721,495,483,968/102,428,791.92 - Step 6: Final answer
x = 79,720,958.75
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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.