Finding the Fourth Proportional to 75,548.39, 112,681.37 and 74,219.99
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Solution
The fourth proportional to 75,548.39, 112,681.37 and 74,219.99 is: 110,700.04
Step by Step Solution
- Step 1: Write the proportion equation
75,548.39 : 112,681.37 = 74,219.99 : x - Step 2: Convert to fraction form
75,548.39/112,681.37 = 74,219.99/x - Step 3: Cross multiply
75,548.39x = 112,681.37 × 74,219.99 - Step 4: Simplify right side
75,548.39x = 8,363,209,783.49 - Step 5: Solve for x
x = 8,363,209,783.49/75,548.39 - Step 6: Final answer
x = 110,700.04
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.