Finding the Fourth Proportional to 74,621.48, 102,959.88 and 42,348.95
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Solution
The fourth proportional to 74,621.48, 102,959.88 and 42,348.95 is: 58,431.47
Step by Step Solution
- Step 1: Write the proportion equation
74,621.48 : 102,959.88 = 42,348.95 : x - Step 2: Convert to fraction form
74,621.48/102,959.88 = 42,348.95/x - Step 3: Cross multiply
74,621.48x = 102,959.88 × 42,348.95 - Step 4: Simplify right side
74,621.48x = 4,360,242,810.13 - Step 5: Solve for x
x = 4,360,242,810.13/74,621.48 - Step 6: Final answer
x = 58,431.47
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1.5x scale
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.