Finding the Fourth Proportional to 73,758,920.80, 110,638,381.20 and 68,720,072.80
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Solution
The fourth proportional to 73,758,920.80, 110,638,381.20 and 68,720,072.80 is: 103,080,109.20
Step by Step Solution
- Step 1: Write the proportion equation
73,758,920.80 : 110,638,381.20 = 68,720,072.80 : x - Step 2: Convert to fraction form
73,758,920.80/110,638,381.20 = 68,720,072.80/x - Step 3: Cross multiply
73,758,920.80x = 110,638,381.20 × 68,720,072.80 - Step 4: Simplify right side
73,758,920.80x = 7,603,077,610,538,151 - Step 5: Solve for x
x = 7,603,077,610,538,151/73,758,920.80 - Step 6: Final answer
x = 103,080,109.20
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1.5x scale
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.