Finding the Fourth Proportional to 68,688,005.20, 103,032,007.80 and 48,532,613.20
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Solution
The fourth proportional to 68,688,005.20, 103,032,007.80 and 48,532,613.20 is: 72,798,919.80
Step by Step Solution
- Step 1: Write the proportion equation
68,688,005.20 : 103,032,007.80 = 48,532,613.20 : x - Step 2: Convert to fraction form
68,688,005.20/103,032,007.80 = 48,532,613.20/x - Step 3: Cross multiply
68,688,005.20x = 103,032,007.80 × 48,532,613.20 - Step 4: Simplify right side
68,688,005.20x = 5,000,412,581,776,783 - Step 5: Solve for x
x = 5,000,412,581,776,783/68,688,005.20 - Step 6: Final answer
x = 72,798,919.80
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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.