Finding the Fourth Proportional to 99,931,106.42, 137,894,310.01 and 55,269,981.58
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Solution
The fourth proportional to 99,931,106.42, 137,894,310.01 and 55,269,981.58 is: 76,266,702.60
Step by Step Solution
- Step 1: Write the proportion equation
99,931,106.42 : 137,894,310.01 = 55,269,981.58 : x - Step 2: Convert to fraction form
99,931,106.42/137,894,310.01 = 55,269,981.58/x - Step 3: Cross multiply
99,931,106.42x = 137,894,310.01 × 55,269,981.58 - Step 4: Simplify right side
99,931,106.42x = 7,621,415,974,239,509 - Step 5: Solve for x
x = 7,621,415,974,239,509/99,931,106.42 - Step 6: Final answer
x = 76,266,702.60
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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.