Finding the Fourth Proportional to 7,103,128.08, 9,799,918.12 and 4,045,177.20
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Solution
The fourth proportional to 7,103,128.08, 9,799,918.12 and 4,045,177.20 is: 5,580,978.53
Step by Step Solution
- Step 1: Write the proportion equation
7,103,128.08 : 9,799,918.12 = 4,045,177.20 : x - Step 2: Convert to fraction form
7,103,128.08/9,799,918.12 = 4,045,177.20/x - Step 3: Cross multiply
7,103,128.08x = 9,799,918.12 × 4,045,177.20 - Step 4: Simplify right side
7,103,128.08x = 39,642,405,340,890.86 - Step 5: Solve for x
x = 39,642,405,340,890.86/7,103,128.08 - Step 6: Final answer
x = 5,580,978.53
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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.