Finding the Fourth Proportional to 78,702.98, 108,610.21 and 42,892.99
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Solution
The fourth proportional to 78,702.98, 108,610.21 and 42,892.99 is: 59,192.38
Step by Step Solution
- Step 1: Write the proportion equation
78,702.98 : 108,610.21 = 42,892.99 : x - Step 2: Convert to fraction form
78,702.98/108,610.21 = 42,892.99/x - Step 3: Cross multiply
78,702.98x = 108,610.21 × 42,892.99 - Step 4: Simplify right side
78,702.98x = 4,658,616,258.04 - Step 5: Solve for x
x = 4,658,616,258.04/78,702.98 - Step 6: Final answer
x = 59,192.38
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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.