Finding the Fourth Proportional to 70,877.80, 106,316.70 and 61,661.80
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Solution
The fourth proportional to 70,877.80, 106,316.70 and 61,661.80 is: 92,492.70
Step by Step Solution
- Step 1: Write the proportion equation
70,877.80 : 106,316.70 = 61,661.80 : x - Step 2: Convert to fraction form
70,877.80/106,316.70 = 61,661.80/x - Step 3: Cross multiply
70,877.80x = 106,316.70 × 61,661.80 - Step 4: Simplify right side
70,877.80x = 6,555,679,092.06 - Step 5: Solve for x
x = 6,555,679,092.06/70,877.80 - Step 6: Final answer
x = 92,492.70
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1.5x scale
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.