Finding the Fourth Proportional to 81,015,878,397.38, 121,476,712,263.28 and 30,655,202,534.60
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Solution
The fourth proportional to 81,015,878,397.38, 121,476,712,263.28 and 30,655,202,534.60 is: 45,964,979,845.09
Step by Step Solution
- Step 1: Write the proportion equation
81,015,878,397.38 : 121,476,712,263.28 = 30,655,202,534.60 : x - Step 2: Convert to fraction form
81,015,878,397.38/121,476,712,263.28 = 30,655,202,534.60/x - Step 3: Cross multiply
81,015,878,397.38x = 121,476,712,263.28 × 30,655,202,534.60 - Step 4: Simplify right side
81,015,878,397.38x = 3,723,893,217,667,568,893,952 - Step 5: Solve for x
x = 3,723,893,217,667,568,893,952/81,015,878,397.38 - Step 6: Final answer
x = 45,964,979,845.09
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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.