Finding the Fourth Proportional to 77,136,804.38, 106,451,859.12 and 42,330,740.42
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Solution
The fourth proportional to 77,136,804.38, 106,451,859.12 and 42,330,740.42 is: 58,418,106.01
Step by Step Solution
- Step 1: Write the proportion equation
77,136,804.38 : 106,451,859.12 = 42,330,740.42 : x - Step 2: Convert to fraction form
77,136,804.38/106,451,859.12 = 42,330,740.42/x - Step 3: Cross multiply
77,136,804.38x = 106,451,859.12 × 42,330,740.42 - Step 4: Simplify right side
77,136,804.38x = 4,506,186,015,635,130 - Step 5: Solve for x
x = 4,506,186,015,635,130/77,136,804.38 - Step 6: Final answer
x = 58,418,106.01
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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.