Finding the Fourth Proportional to 89,316.64, 133,977.84 and 26,987.68
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Solution
The fourth proportional to 89,316.64, 133,977.84 and 26,987.68 is: 40,482.39
Step by Step Solution
- Step 1: Write the proportion equation
89,316.64 : 133,977.84 = 26,987.68 : x - Step 2: Convert to fraction form
89,316.64/133,977.84 = 26,987.68/x - Step 3: Cross multiply
89,316.64x = 133,977.84 × 26,987.68 - Step 4: Simplify right side
89,316.64x = 3,615,751,073.01 - Step 5: Solve for x
x = 3,615,751,073.01/89,316.64 - Step 6: Final answer
x = 40,482.39
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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.