Finding the Fourth Proportional to 85,725,575.16, 128,578,176.18 and 28,203,580.68
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Solution
The fourth proportional to 85,725,575.16, 128,578,176.18 and 28,203,580.68 is: 42,302,019.66
Step by Step Solution
- Step 1: Write the proportion equation
85,725,575.16 : 128,578,176.18 = 28,203,580.68 : x - Step 2: Convert to fraction form
85,725,575.16/128,578,176.18 = 28,203,580.68/x - Step 3: Cross multiply
85,725,575.16x = 128,578,176.18 × 28,203,580.68 - Step 4: Simplify right side
85,725,575.16x = 3,626,364,965,579,884.50 - Step 5: Solve for x
x = 3,626,364,965,579,884.50/85,725,575.16 - Step 6: Final answer
x = 42,302,019.66
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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.