Finding the Fourth Proportional to 77,879,803.10, 107,507,220.36 and 48,525,638.90
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Solution
The fourth proportional to 77,879,803.10, 107,507,220.36 and 48,525,638.90 is: 66,986,000.83
Step by Step Solution
- Step 1: Write the proportion equation
77,879,803.10 : 107,507,220.36 = 48,525,638.90 : x - Step 2: Convert to fraction form
77,879,803.10/107,507,220.36 = 48,525,638.90/x - Step 3: Cross multiply
77,879,803.10x = 107,507,220.36 × 48,525,638.90 - Step 4: Simplify right side
77,879,803.10x = 5,216,856,554,600,856 - Step 5: Solve for x
x = 5,216,856,554,600,856/77,879,803.10 - Step 6: Final answer
x = 66,986,000.83
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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.