Finding the Fourth Proportional to 100,539,276.48, 138,744,331.20 and 57,079,212.48
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Solution
The fourth proportional to 100,539,276.48, 138,744,331.20 and 57,079,212.48 is: 78,769,386.83
Step by Step Solution
- Step 1: Write the proportion equation
100,539,276.48 : 138,744,331.20 = 57,079,212.48 : x - Step 2: Convert to fraction form
100,539,276.48/138,744,331.20 = 57,079,212.48/x - Step 3: Cross multiply
100,539,276.48x = 138,744,331.20 × 57,079,212.48 - Step 4: Simplify right side
100,539,276.48x = 7,919,417,160,960,292 - Step 5: Solve for x
x = 7,919,417,160,960,292/100,539,276.48 - Step 6: Final answer
x = 78,769,386.83
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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.