Finding the Fourth Proportional to 105,435,475.92, 145,518,366.60 and 72,368,560.08
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Solution
The fourth proportional to 105,435,475.92, 145,518,366.60 and 72,368,560.08 is: 99,880,562.63
Step by Step Solution
- Step 1: Write the proportion equation
105,435,475.92 : 145,518,366.60 = 72,368,560.08 : x - Step 2: Convert to fraction form
105,435,475.92/145,518,366.60 = 72,368,560.08/x - Step 3: Cross multiply
105,435,475.92x = 145,518,366.60 × 72,368,560.08 - Step 4: Simplify right side
105,435,475.92x = 10,530,954,656,035,564 - Step 5: Solve for x
x = 10,530,954,656,035,564/105,435,475.92 - Step 6: Final answer
x = 99,880,562.63
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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.