Finding the Fourth Proportional to 88,660,486.80, 132,990,730.20 and 72,717,256.80
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Solution
The fourth proportional to 88,660,486.80, 132,990,730.20 and 72,717,256.80 is: 109,075,885.20
Step by Step Solution
- Step 1: Write the proportion equation
88,660,486.80 : 132,990,730.20 = 72,717,256.80 : x - Step 2: Convert to fraction form
88,660,486.80/132,990,730.20 = 72,717,256.80/x - Step 3: Cross multiply
88,660,486.80x = 132,990,730.20 × 72,717,256.80 - Step 4: Simplify right side
88,660,486.80x = 9,670,721,079,972,916 - Step 5: Solve for x
x = 9,670,721,079,972,916/88,660,486.80 - Step 6: Final answer
x = 109,075,885.20
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.