Finding the Fourth Proportional to 78,432,280.71, 108,234,995.18 and 43,624,221.99
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Solution
The fourth proportional to 78,432,280.71, 108,234,995.18 and 43,624,221.99 is: 60,200,563.01
Step by Step Solution
- Step 1: Write the proportion equation
78,432,280.71 : 108,234,995.18 = 43,624,221.99 : x - Step 2: Convert to fraction form
78,432,280.71/108,234,995.18 = 43,624,221.99/x - Step 3: Cross multiply
78,432,280.71x = 108,234,995.18 × 43,624,221.99 - Step 4: Simplify right side
78,432,280.71x = 4,721,667,456,600,779 - Step 5: Solve for x
x = 4,721,667,456,600,779/78,432,280.71 - Step 6: Final answer
x = 60,200,563.01
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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.