Finding the Fourth Proportional to 69,192.71, 103,789.16 and 19,272.95
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Solution
The fourth proportional to 69,192.71, 103,789.16 and 19,272.95 is: 28,909.45
Step by Step Solution
- Step 1: Write the proportion equation
69,192.71 : 103,789.16 = 19,272.95 : x - Step 2: Convert to fraction form
69,192.71/103,789.16 = 19,272.95/x - Step 3: Cross multiply
69,192.71x = 103,789.16 × 19,272.95 - Step 4: Simplify right side
69,192.71x = 2,000,323,291.22 - Step 5: Solve for x
x = 2,000,323,291.22/69,192.71 - Step 6: Final answer
x = 28,909.45
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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.