Finding the Fourth Proportional to 89,031.40, 133,352.70 and 53,909.80
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Solution
The fourth proportional to 89,031.40, 133,352.70 and 53,909.80 is: 80,746.99
Step by Step Solution
- Step 1: Write the proportion equation
89,031.40 : 133,352.70 = 53,909.80 : x - Step 2: Convert to fraction form
89,031.40/133,352.70 = 53,909.80/x - Step 3: Cross multiply
89,031.40x = 133,352.70 × 53,909.80 - Step 4: Simplify right side
89,031.40x = 7,189,017,386.46 - Step 5: Solve for x
x = 7,189,017,386.46/89,031.40 - Step 6: Final answer
x = 80,746.99
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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.