Finding the Fourth Proportional to 66,440,292.80, 99,660,439.20 and 39,118,539.20
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Solution
The fourth proportional to 66,440,292.80, 99,660,439.20 and 39,118,539.20 is: 58,677,808.80
Step by Step Solution
- Step 1: Write the proportion equation
66,440,292.80 : 99,660,439.20 = 39,118,539.20 : x - Step 2: Convert to fraction form
66,440,292.80/99,660,439.20 = 39,118,539.20/x - Step 3: Cross multiply
66,440,292.80x = 99,660,439.20 × 39,118,539.20 - Step 4: Simplify right side
66,440,292.80x = 3,898,570,797,534,417 - Step 5: Solve for x
x = 3,898,570,797,534,417/66,440,292.80 - Step 6: Final answer
x = 58,677,808.80
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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.