Finding the Fourth Proportional to 99,518.13, 137,347.58 and 57,075.75
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Solution
The fourth proportional to 99,518.13, 137,347.58 and 57,075.75 is: 78,771.74
Step by Step Solution
- Step 1: Write the proportion equation
99,518.13 : 137,347.58 = 57,075.75 : x - Step 2: Convert to fraction form
99,518.13/137,347.58 = 57,075.75/x - Step 3: Cross multiply
99,518.13x = 137,347.58 × 57,075.75 - Step 4: Simplify right side
99,518.13x = 7,839,216,281.87 - Step 5: Solve for x
x = 7,839,216,281.87/99,518.13 - Step 6: Final answer
x = 78,771.74
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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.