Finding the Fourth Proportional to 81,684,985.32, 112,725,299.70 and 44,515,276.56
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Solution
The fourth proportional to 81,684,985.32, 112,725,299.70 and 44,515,276.56 is: 61,431,092.53
Step by Step Solution
- Step 1: Write the proportion equation
81,684,985.32 : 112,725,299.70 = 44,515,276.56 : x - Step 2: Convert to fraction form
81,684,985.32/112,725,299.70 = 44,515,276.56/x - Step 3: Cross multiply
81,684,985.32x = 112,725,299.70 × 44,515,276.56 - Step 4: Simplify right side
81,684,985.32x = 5,017,997,891,454,385 - Step 5: Solve for x
x = 5,017,997,891,454,385/81,684,985.32 - Step 6: Final answer
x = 61,431,092.53
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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.