Finding the Fourth Proportional to 66,452,585.40, 99,678,878.10 and 47,178,991.80
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Solution
The fourth proportional to 66,452,585.40, 99,678,878.10 and 47,178,991.80 is: 70,768,487.70
Step by Step Solution
- Step 1: Write the proportion equation
66,452,585.40 : 99,678,878.10 = 47,178,991.80 : x - Step 2: Convert to fraction form
66,452,585.40/99,678,878.10 = 47,178,991.80/x - Step 3: Cross multiply
66,452,585.40x = 99,678,878.10 × 47,178,991.80 - Step 4: Simplify right side
66,452,585.40x = 4,702,748,972,513,099 - Step 5: Solve for x
x = 4,702,748,972,513,099/66,452,585.40 - Step 6: Final answer
x = 70,768,487.70
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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.