Finding the Fourth Proportional to 72,726,071.60, 100,364,112.09 and 39,688,454.08
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Solution
The fourth proportional to 72,726,071.60, 100,364,112.09 and 39,688,454.08 is: 54,771,230.82
Step by Step Solution
- Step 1: Write the proportion equation
72,726,071.60 : 100,364,112.09 = 39,688,454.08 : x - Step 2: Convert to fraction form
72,726,071.60/100,364,112.09 = 39,688,454.08/x - Step 3: Cross multiply
72,726,071.60x = 100,364,112.09 × 39,688,454.08 - Step 4: Simplify right side
72,726,071.60x = 3,983,296,453,963,938 - Step 5: Solve for x
x = 3,983,296,453,963,938/72,726,071.60 - Step 6: Final answer
x = 54,771,230.82
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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.