Finding the Fourth Proportional to 101,787.66, 140,438.07 and 59,337.99
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Solution
The fourth proportional to 101,787.66, 140,438.07 and 59,337.99 is: 81,869.58
Step by Step Solution
- Step 1: Write the proportion equation
101,787.66 : 140,438.07 = 59,337.99 : x - Step 2: Convert to fraction form
101,787.66/140,438.07 = 59,337.99/x - Step 3: Cross multiply
101,787.66x = 140,438.07 × 59,337.99 - Step 4: Simplify right side
101,787.66x = 8,333,312,793.28 - Step 5: Solve for x
x = 8,333,312,793.28/101,787.66 - Step 6: Final answer
x = 81,869.58
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1.5x scale
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.