Finding the Fourth Proportional to 81,932,293.48, 122,869,980.06 and 45,596,134.12
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Solution
The fourth proportional to 81,932,293.48, 122,869,980.06 and 45,596,134.12 is: 68,378,362.82
Step by Step Solution
- Step 1: Write the proportion equation
81,932,293.48 : 122,869,980.06 = 45,596,134.12 : x - Step 2: Convert to fraction form
81,932,293.48/122,869,980.06 = 45,596,134.12/x - Step 3: Cross multiply
81,932,293.48x = 122,869,980.06 × 45,596,134.12 - Step 4: Simplify right side
81,932,293.48x = 5,602,396,090,137,485 - Step 5: Solve for x
x = 5,602,396,090,137,485/81,932,293.48 - Step 6: Final answer
x = 68,378,362.82
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.