Finding the Fourth Proportional to 78,580.99, 108,490.76 and 54,698.95
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Solution
The fourth proportional to 78,580.99, 108,490.76 and 54,698.95 is: 75,518.65
Step by Step Solution
- Step 1: Write the proportion equation
78,580.99 : 108,490.76 = 54,698.95 : x - Step 2: Convert to fraction form
78,580.99/108,490.76 = 54,698.95/x - Step 3: Cross multiply
78,580.99x = 108,490.76 × 54,698.95 - Step 4: Simplify right side
78,580.99x = 5,934,330,656.70 - Step 5: Solve for x
x = 5,934,330,656.70/78,580.99 - Step 6: Final answer
x = 75,518.65
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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.