Finding the Fourth Proportional to 67,877,339.41, 93,680,816.79 and 39,991,134.07
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Solution
The fourth proportional to 67,877,339.41, 93,680,816.79 and 39,991,134.07 is: 55,193,708.78
Step by Step Solution
- Step 1: Write the proportion equation
67,877,339.41 : 93,680,816.79 = 39,991,134.07 : x - Step 2: Convert to fraction form
67,877,339.41/93,680,816.79 = 39,991,134.07/x - Step 3: Cross multiply
67,877,339.41x = 93,680,816.79 × 39,991,134.07 - Step 4: Simplify right side
67,877,339.41x = 3,746,402,104,035,997.50 - Step 5: Solve for x
x = 3,746,402,104,035,997.50/67,877,339.41 - Step 6: Final answer
x = 55,193,708.78
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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.