Finding the Fourth Proportional to 81,015,878,394.75, 121,476,712,259.34 and 30,655,202,531.97
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Solution
The fourth proportional to 81,015,878,394.75, 121,476,712,259.34 and 30,655,202,531.97 is: 45,964,979,841.15
Step by Step Solution
- Step 1: Write the proportion equation
81,015,878,394.75 : 121,476,712,259.34 = 30,655,202,531.97 : x - Step 2: Convert to fraction form
81,015,878,394.75/121,476,712,259.34 = 30,655,202,531.97/x - Step 3: Cross multiply
81,015,878,394.75x = 121,476,712,259.34 × 30,655,202,531.97 - Step 4: Simplify right side
81,015,878,394.75x = 3,723,893,217,227,910,938,624 - Step 5: Solve for x
x = 3,723,893,217,227,910,938,624/81,015,878,394.75 - Step 6: Final answer
x = 45,964,979,841.15
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1.5x scale
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.