Finding the Fourth Proportional to 85,551,207.80, 128,326,811.70 and 65,395,815.80
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Solution
The fourth proportional to 85,551,207.80, 128,326,811.70 and 65,395,815.80 is: 98,093,723.70
Step by Step Solution
- Step 1: Write the proportion equation
85,551,207.80 : 128,326,811.70 = 65,395,815.80 : x - Step 2: Convert to fraction form
85,551,207.80/128,326,811.70 = 65,395,815.80/x - Step 3: Cross multiply
85,551,207.80x = 128,326,811.70 × 65,395,815.80 - Step 4: Simplify right side
85,551,207.80x = 8,392,036,540,134,485 - Step 5: Solve for x
x = 8,392,036,540,134,485/85,551,207.80 - Step 6: Final answer
x = 98,093,723.70
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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.