Finding the Fourth Proportional to 81,246,742.34, 121,888,221.86 and 38,092,945.82
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Solution
The fourth proportional to 81,246,742.34, 121,888,221.86 and 38,092,945.82 is: 57,147,908.92
Step by Step Solution
- Step 1: Write the proportion equation
81,246,742.34 : 121,888,221.86 = 38,092,945.82 : x - Step 2: Convert to fraction form
81,246,742.34/121,888,221.86 = 38,092,945.82/x - Step 3: Cross multiply
81,246,742.34x = 121,888,221.86 × 38,092,945.82 - Step 4: Simplify right side
81,246,742.34x = 4,643,081,430,894,910 - Step 5: Solve for x
x = 4,643,081,430,894,910/81,246,742.34 - Step 6: Final answer
x = 57,147,908.92
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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.