Finding the Fourth Proportional to 12,201,781.16, 16,839,951.35 and 7,045,134.05
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Solution
The fourth proportional to 12,201,781.16, 16,839,951.35 and 7,045,134.05 is: 9,723,147.22
Step by Step Solution
- Step 1: Write the proportion equation
12,201,781.16 : 16,839,951.35 = 7,045,134.05 : x - Step 2: Convert to fraction form
12,201,781.16/16,839,951.35 = 7,045,134.05/x - Step 3: Cross multiply
12,201,781.16x = 16,839,951.35 × 7,045,134.05 - Step 4: Simplify right side
12,201,781.16x = 118,639,714,536,803.03 - Step 5: Solve for x
x = 118,639,714,536,803.03/12,201,781.16 - Step 6: Final answer
x = 9,723,147.22
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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.