Finding the Fourth Proportional to 83,931.84, 115,823.52 and 46,205.28
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Solution
The fourth proportional to 83,931.84, 115,823.52 and 46,205.28 is: 63,761.95
Step by Step Solution
- Step 1: Write the proportion equation
83,931.84 : 115,823.52 = 46,205.28 : x - Step 2: Convert to fraction form
83,931.84/115,823.52 = 46,205.28/x - Step 3: Cross multiply
83,931.84x = 115,823.52 × 46,205.28 - Step 4: Simplify right side
83,931.84x = 5,351,658,172.19 - Step 5: Solve for x
x = 5,351,658,172.19/83,931.84 - Step 6: Final answer
x = 63,761.95
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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.