Finding the Fourth Proportional to 77,384,152.71, 115,988,228.64 and 40,439,079.09
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Solution
The fourth proportional to 77,384,152.71, 115,988,228.64 and 40,439,079.09 is: 60,612,631.75
Step by Step Solution
- Step 1: Write the proportion equation
77,384,152.71 : 115,988,228.64 = 40,439,079.09 : x - Step 2: Convert to fraction form
77,384,152.71/115,988,228.64 = 40,439,079.09/x - Step 3: Cross multiply
77,384,152.71x = 115,988,228.64 × 40,439,079.09 - Step 4: Simplify right side
77,384,152.71x = 4,690,457,151,481,964 - Step 5: Solve for x
x = 4,690,457,151,481,964/77,384,152.71 - Step 6: Final answer
x = 60,612,631.75
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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.