Finding the Fourth Proportional to 115,435,574.68, 159,303,671.78 and 65,874,961.84
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Solution
The fourth proportional to 115,435,574.68, 159,303,671.78 and 65,874,961.84 is: 90,908,918.92
Step by Step Solution
- Step 1: Write the proportion equation
115,435,574.68 : 159,303,671.78 = 65,874,961.84 : x - Step 2: Convert to fraction form
115,435,574.68/159,303,671.78 = 65,874,961.84/x - Step 3: Cross multiply
115,435,574.68x = 159,303,671.78 × 65,874,961.84 - Step 4: Simplify right side
115,435,574.68x = 10,494,123,299,479,386 - Step 5: Solve for x
x = 10,494,123,299,479,386/115,435,574.68 - Step 6: Final answer
x = 90,908,918.92
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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.