Finding the Fourth Proportional to 75,128.08, 103,675.80 and 45,320.08
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Solution
The fourth proportional to 75,128.08, 103,675.80 and 45,320.08 is: 62,541.14
Step by Step Solution
- Step 1: Write the proportion equation
75,128.08 : 103,675.80 = 45,320.08 : x - Step 2: Convert to fraction form
75,128.08/103,675.80 = 45,320.08/x - Step 3: Cross multiply
75,128.08x = 103,675.80 × 45,320.08 - Step 4: Simplify right side
75,128.08x = 4,698,595,550.06 - Step 5: Solve for x
x = 4,698,595,550.06/75,128.08 - Step 6: Final answer
x = 62,541.14
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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.