Finding the Fourth Proportional to 97,403.91, 134,439.78 and 57,130.65
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Solution
The fourth proportional to 97,403.91, 134,439.78 and 57,130.65 is: 78,853.43
Step by Step Solution
- Step 1: Write the proportion equation
97,403.91 : 134,439.78 = 57,130.65 : x - Step 2: Convert to fraction form
97,403.91/134,439.78 = 57,130.65/x - Step 3: Cross multiply
97,403.91x = 134,439.78 × 57,130.65 - Step 4: Simplify right side
97,403.91x = 7,680,632,017.26 - Step 5: Solve for x
x = 7,680,632,017.26/97,403.91 - Step 6: Final answer
x = 78,853.43
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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.