Finding the Fourth Proportional to 83,780.12, 115,616.94 and 46,056.80
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Solution
The fourth proportional to 83,780.12, 115,616.94 and 46,056.80 is: 63,558.59
Step by Step Solution
- Step 1: Write the proportion equation
83,780.12 : 115,616.94 = 46,056.80 : x - Step 2: Convert to fraction form
83,780.12/115,616.94 = 46,056.80/x - Step 3: Cross multiply
83,780.12x = 115,616.94 × 46,056.80 - Step 4: Simplify right side
83,780.12x = 5,324,946,282.19 - Step 5: Solve for x
x = 5,324,946,282.19/83,780.12 - Step 6: Final answer
x = 63,558.59
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1.5x scale
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.