Finding the Fourth Proportional to 74,610.08, 102,970.80 and 42,778.88
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Solution
The fourth proportional to 74,610.08, 102,970.80 and 42,778.88 is: 59,039.95
Step by Step Solution
- Step 1: Write the proportion equation
74,610.08 : 102,970.80 = 42,778.88 : x - Step 2: Convert to fraction form
74,610.08/102,970.80 = 42,778.88/x - Step 3: Cross multiply
74,610.08x = 102,970.80 × 42,778.88 - Step 4: Simplify right side
74,610.08x = 4,404,975,496.70 - Step 5: Solve for x
x = 4,404,975,496.70/74,610.08 - Step 6: Final answer
x = 59,039.95
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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.