Finding the Fourth Proportional to 92,285.10, 138,427.65 and 69,977.70
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Solution
The fourth proportional to 92,285.10, 138,427.65 and 69,977.70 is: 104,966.55
Step by Step Solution
- Step 1: Write the proportion equation
92,285.10 : 138,427.65 = 69,977.70 : x - Step 2: Convert to fraction form
92,285.10/138,427.65 = 69,977.70/x - Step 3: Cross multiply
92,285.10x = 138,427.65 × 69,977.70 - Step 4: Simplify right side
92,285.10x = 9,686,848,563.41 - Step 5: Solve for x
x = 9,686,848,563.41/92,285.10 - Step 6: Final answer
x = 104,966.55
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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.