Finding the Fourth Proportional to 75,579.30, 113,368.95 and 19,419.30
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Solution
The fourth proportional to 75,579.30, 113,368.95 and 19,419.30 is: 29,128.95
Step by Step Solution
- Step 1: Write the proportion equation
75,579.30 : 113,368.95 = 19,419.30 : x - Step 2: Convert to fraction form
75,579.30/113,368.95 = 19,419.30/x - Step 3: Cross multiply
75,579.30x = 113,368.95 × 19,419.30 - Step 4: Simplify right side
75,579.30x = 2,201,545,650.74 - Step 5: Solve for x
x = 2,201,545,650.74/75,579.30 - Step 6: Final answer
x = 29,128.95
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.