Finding the Fourth Proportional to 97,415.12, 134,441.16 and 81,471.44
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Solution
The fourth proportional to 97,415.12, 134,441.16 and 81,471.44 is: 112,437.52
Step by Step Solution
- Step 1: Write the proportion equation
97,415.12 : 134,441.16 = 81,471.44 : x - Step 2: Convert to fraction form
97,415.12/134,441.16 = 81,471.44/x - Step 3: Cross multiply
97,415.12x = 134,441.16 × 81,471.44 - Step 4: Simplify right side
97,415.12x = 10,953,114,900.47 - Step 5: Solve for x
x = 10,953,114,900.47/97,415.12 - Step 6: Final answer
x = 112,437.52
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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.