Finding the Fourth Proportional to 69,702.66, 104,557.95 and 19,778.81
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Solution
The fourth proportional to 69,702.66, 104,557.95 and 19,778.81 is: 29,669.33
Step by Step Solution
- Step 1: Write the proportion equation
69,702.66 : 104,557.95 = 19,778.81 : x - Step 2: Convert to fraction form
69,702.66/104,557.95 = 19,778.81/x - Step 3: Cross multiply
69,702.66x = 104,557.95 × 19,778.81 - Step 4: Simplify right side
69,702.66x = 2,068,031,304.25 - Step 5: Solve for x
x = 2,068,031,304.25/69,702.66 - Step 6: Final answer
x = 29,669.33
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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.