Finding the Fourth Proportional to 84,702.51, 117,026.76 and 72,088.99
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Solution
The fourth proportional to 84,702.51, 117,026.76 and 72,088.99 is: 99,599.66
Step by Step Solution
- Step 1: Write the proportion equation
84,702.51 : 117,026.76 = 72,088.99 : x - Step 2: Convert to fraction form
84,702.51/117,026.76 = 72,088.99/x - Step 3: Cross multiply
84,702.51x = 117,026.76 × 72,088.99 - Step 4: Simplify right side
84,702.51x = 8,436,340,931.37 - Step 5: Solve for x
x = 8,436,340,931.37/84,702.51 - Step 6: Final answer
x = 99,599.66
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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.