Finding the Fourth Proportional to 88,423.57, 121,988.39 and 54,421.80
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Solution
The fourth proportional to 88,423.57, 121,988.39 and 54,421.80 is: 75,079.84
Step by Step Solution
- Step 1: Write the proportion equation
88,423.57 : 121,988.39 = 54,421.80 : x - Step 2: Convert to fraction form
88,423.57/121,988.39 = 54,421.80/x - Step 3: Cross multiply
88,423.57x = 121,988.39 × 54,421.80 - Step 4: Simplify right side
88,423.57x = 6,638,827,762.90 - Step 5: Solve for x
x = 6,638,827,762.90/88,423.57 - Step 6: Final answer
x = 75,079.84
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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.