Finding the Fourth Proportional to 93,709.63, 129,228.48 and 79,368.38
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Solution
The fourth proportional to 93,709.63, 129,228.48 and 79,368.38 is: 109,451.45
Step by Step Solution
- Step 1: Write the proportion equation
93,709.63 : 129,228.48 = 79,368.38 : x - Step 2: Convert to fraction form
93,709.63/129,228.48 = 79,368.38/x - Step 3: Cross multiply
93,709.63x = 129,228.48 × 79,368.38 - Step 4: Simplify right side
93,709.63x = 10,256,654,945.93 - Step 5: Solve for x
x = 10,256,654,945.93/93,709.63 - Step 6: Final answer
x = 109,451.45
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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.