Finding the Fourth Proportional to 86,890.90, 119,903.64 and 48,643.99
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Solution
The fourth proportional to 86,890.90, 119,903.64 and 48,643.99 is: 67,125.46
Step by Step Solution
- Step 1: Write the proportion equation
86,890.90 : 119,903.64 = 48,643.99 : x - Step 2: Convert to fraction form
86,890.90/119,903.64 = 48,643.99/x - Step 3: Cross multiply
86,890.90x = 119,903.64 × 48,643.99 - Step 4: Simplify right side
86,890.90x = 5,832,591,465.12 - Step 5: Solve for x
x = 5,832,591,465.12/86,890.90 - Step 6: Final answer
x = 67,125.46
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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.