Finding the Fourth Proportional to 78,706.08, 118,503.27 and 69,406.02
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Solution
The fourth proportional to 78,706.08, 118,503.27 and 69,406.02 is: 104,500.70
Step by Step Solution
- Step 1: Write the proportion equation
78,706.08 : 118,503.27 = 69,406.02 : x - Step 2: Convert to fraction form
78,706.08/118,503.27 = 69,406.02/x - Step 3: Cross multiply
78,706.08x = 118,503.27 × 69,406.02 - Step 4: Simplify right side
78,706.08x = 8,224,840,327.69 - Step 5: Solve for x
x = 8,224,840,327.69/78,706.08 - Step 6: Final answer
x = 104,500.70
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Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.