Finding the Fourth Proportional to 68,158,656.42, 102,162,253.68 and 51,931,106.70
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Solution
The fourth proportional to 68,158,656.42, 102,162,253.68 and 51,931,106.70 is: 77,838,959.50
Step by Step Solution
- Step 1: Write the proportion equation
68,158,656.42 : 102,162,253.68 = 51,931,106.70 : x - Step 2: Convert to fraction form
68,158,656.42/102,162,253.68 = 51,931,106.70/x - Step 3: Cross multiply
68,158,656.42x = 102,162,253.68 × 51,931,106.70 - Step 4: Simplify right side
68,158,656.42x = 5,305,398,896,568,548 - Step 5: Solve for x
x = 5,305,398,896,568,548/68,158,656.42 - Step 6: Final answer
x = 77,838,959.50
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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.