Finding the Fourth Proportional to 78,798.42, 118,219.50 and 43,762.68
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Solution
The fourth proportional to 78,798.42, 118,219.50 and 43,762.68 is: 65,656.17
Step by Step Solution
- Step 1: Write the proportion equation
78,798.42 : 118,219.50 = 43,762.68 : x - Step 2: Convert to fraction form
78,798.42/118,219.50 = 43,762.68/x - Step 3: Cross multiply
78,798.42x = 118,219.50 × 43,762.68 - Step 4: Simplify right side
78,798.42x = 5,173,602,148.26 - Step 5: Solve for x
x = 5,173,602,148.26/78,798.42 - Step 6: Final answer
x = 65,656.17
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.