Finding the Fourth Proportional to 85,283.78, 117,739.80 and 56,652.53
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Solution
The fourth proportional to 85,283.78, 117,739.80 and 56,652.53 is: 78,212.50
Step by Step Solution
- Step 1: Write the proportion equation
85,283.78 : 117,739.80 = 56,652.53 : x - Step 2: Convert to fraction form
85,283.78/117,739.80 = 56,652.53/x - Step 3: Cross multiply
85,283.78x = 117,739.80 × 56,652.53 - Step 4: Simplify right side
85,283.78x = 6,670,256,963.00 - Step 5: Solve for x
x = 6,670,256,963.00/85,283.78 - Step 6: Final answer
x = 78,212.50
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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.