Finding the Fourth Proportional to 5,170,112.08, 7,134,615.64 and 2,878,272.72
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Solution
The fourth proportional to 5,170,112.08, 7,134,615.64 and 2,878,272.72 is: 3,971,938.95
Step by Step Solution
- Step 1: Write the proportion equation
5,170,112.08 : 7,134,615.64 = 2,878,272.72 : x - Step 2: Convert to fraction form
5,170,112.08/7,134,615.64 = 2,878,272.72/x - Step 3: Cross multiply
5,170,112.08x = 7,134,615.64 × 2,878,272.72 - Step 4: Simplify right side
5,170,112.08x = 20,535,369,564,297.34 - Step 5: Solve for x
x = 20,535,369,564,297.34/5,170,112.08 - Step 6: Final answer
x = 3,971,938.95
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.