Finding the Fourth Proportional to 98,525.78, 135,965.52 and 53,813.78
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Solution
The fourth proportional to 98,525.78, 135,965.52 and 53,813.78 is: 74,262.99
Step by Step Solution
- Step 1: Write the proportion equation
98,525.78 : 135,965.52 = 53,813.78 : x - Step 2: Convert to fraction form
98,525.78/135,965.52 = 53,813.78/x - Step 3: Cross multiply
98,525.78x = 135,965.52 × 53,813.78 - Step 4: Simplify right side
98,525.78x = 7,316,818,580.87 - Step 5: Solve for x
x = 7,316,818,580.87/98,525.78 - Step 6: Final answer
x = 74,262.99
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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.