Finding the Fourth Proportional to 81,532,656.80, 122,298,985.20 and 27,679,968.80
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Solution
The fourth proportional to 81,532,656.80, 122,298,985.20 and 27,679,968.80 is: 41,519,953.20
Step by Step Solution
- Step 1: Write the proportion equation
81,532,656.80 : 122,298,985.20 = 27,679,968.80 : x - Step 2: Convert to fraction form
81,532,656.80/122,298,985.20 = 27,679,968.80/x - Step 3: Cross multiply
81,532,656.80x = 122,298,985.20 × 27,679,968.80 - Step 4: Simplify right side
81,532,656.80x = 3,385,232,094,607,662 - Step 5: Solve for x
x = 3,385,232,094,607,662/81,532,656.80 - Step 6: Final answer
x = 41,519,953.20
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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.