Finding the Fourth Proportional to 86,228,129.80, 129,129,618.30 and 57,317,739.40
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Solution
The fourth proportional to 86,228,129.80, 129,129,618.30 and 57,317,739.40 is: 85,835,304.88
Step by Step Solution
- Step 1: Write the proportion equation
86,228,129.80 : 129,129,618.30 = 57,317,739.40 : x - Step 2: Convert to fraction form
86,228,129.80/129,129,618.30 = 57,317,739.40/x - Step 3: Cross multiply
86,228,129.80x = 129,129,618.30 × 57,317,739.40 - Step 4: Simplify right side
86,228,129.80x = 7,401,417,810,540,871 - Step 5: Solve for x
x = 7,401,417,810,540,871/86,228,129.80 - Step 6: Final answer
x = 85,835,304.88
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.