Finding the Fourth Proportional to 78,077.97, 107,747.58 and 42,267.95
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Solution
The fourth proportional to 78,077.97, 107,747.58 and 42,267.95 is: 58,329.75
Step by Step Solution
- Step 1: Write the proportion equation
78,077.97 : 107,747.58 = 42,267.95 : x - Step 2: Convert to fraction form
78,077.97/107,747.58 = 42,267.95/x - Step 3: Cross multiply
78,077.97x = 107,747.58 × 42,267.95 - Step 4: Simplify right side
78,077.97x = 4,554,268,785.32 - Step 5: Solve for x
x = 4,554,268,785.32/78,077.97 - Step 6: Final answer
x = 58,329.75
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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.