Finding the Fourth Proportional to 74,619.03, 111,379.09 and 68,386.08
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Solution
The fourth proportional to 74,619.03, 111,379.09 and 68,386.08 is: 102,075.56
Step by Step Solution
- Step 1: Write the proportion equation
74,619.03 : 111,379.09 = 68,386.08 : x - Step 2: Convert to fraction form
74,619.03/111,379.09 = 68,386.08/x - Step 3: Cross multiply
74,619.03x = 111,379.09 × 68,386.08 - Step 4: Simplify right side
74,619.03x = 7,616,779,188.10 - Step 5: Solve for x
x = 7,616,779,188.10/74,619.03 - Step 6: Final answer
x = 102,075.56
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.