Finding the Fourth Proportional to 86,315,616.40, 129,260,848.20 and 40,824,266.80
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Solution
The fourth proportional to 86,315,616.40, 129,260,848.20 and 40,824,266.80 is: 61,135,859.00
Step by Step Solution
- Step 1: Write the proportion equation
86,315,616.40 : 129,260,848.20 = 40,824,266.80 : x - Step 2: Convert to fraction form
86,315,616.40/129,260,848.20 = 40,824,266.80/x - Step 3: Cross multiply
86,315,616.40x = 129,260,848.20 × 40,824,266.80 - Step 4: Simplify right side
86,315,616.40x = 5,276,979,353,711,099 - Step 5: Solve for x
x = 5,276,979,353,711,099/86,315,616.40 - Step 6: Final answer
x = 61,135,859.00
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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.