Finding the Fourth Proportional to 86,985.18, 120,076.29 and 58,729.14
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Solution
The fourth proportional to 86,985.18, 120,076.29 and 58,729.14 is: 81,071.02
Step by Step Solution
- Step 1: Write the proportion equation
86,985.18 : 120,076.29 = 58,729.14 : x - Step 2: Convert to fraction form
86,985.18/120,076.29 = 58,729.14/x - Step 3: Cross multiply
86,985.18x = 120,076.29 × 58,729.14 - Step 4: Simplify right side
86,985.18x = 7,051,977,246.09 - Step 5: Solve for x
x = 7,051,977,246.09/86,985.18 - Step 6: Final answer
x = 81,071.02
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.