Finding the Fourth Proportional to 105,351,475.20, 145,390,677.12 and 58,938,961.92
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Solution
The fourth proportional to 105,351,475.20, 145,390,677.12 and 58,938,961.92 is: 81,338,923.50
Step by Step Solution
- Step 1: Write the proportion equation
105,351,475.20 : 145,390,677.12 = 58,938,961.92 : x - Step 2: Convert to fraction form
105,351,475.20/145,390,677.12 = 58,938,961.92/x - Step 3: Cross multiply
105,351,475.20x = 145,390,677.12 × 58,938,961.92 - Step 4: Simplify right side
105,351,475.20x = 8,569,175,582,298,696 - Step 5: Solve for x
x = 8,569,175,582,298,696/105,351,475.20 - Step 6: Final answer
x = 81,338,923.50
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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.