Finding the Fourth Proportional to 74,681,803.74, 111,958,810.11 and 28,656,701.67
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Solution
The fourth proportional to 74,681,803.74, 111,958,810.11 and 28,656,701.67 is: 42,960,534.69
Step by Step Solution
- Step 1: Write the proportion equation
74,681,803.74 : 111,958,810.11 = 28,656,701.67 : x - Step 2: Convert to fraction form
74,681,803.74/111,958,810.11 = 28,656,701.67/x - Step 3: Cross multiply
74,681,803.74x = 111,958,810.11 × 28,656,701.67 - Step 4: Simplify right side
74,681,803.74x = 3,208,370,220,650,450 - Step 5: Solve for x
x = 3,208,370,220,650,450/74,681,803.74 - Step 6: Final answer
x = 42,960,534.69
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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.