Finding the Fourth Proportional to 74,603.64, 102,966.84 and 42,772.80
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Solution
The fourth proportional to 74,603.64, 102,966.84 and 42,772.80 is: 59,034.39
Step by Step Solution
- Step 1: Write the proportion equation
74,603.64 : 102,966.84 = 42,772.80 : x - Step 2: Convert to fraction form
74,603.64/102,966.84 = 42,772.80/x - Step 3: Cross multiply
74,603.64x = 102,966.84 × 42,772.80 - Step 4: Simplify right side
74,603.64x = 4,404,180,053.95 - Step 5: Solve for x
x = 4,404,180,053.95/74,603.64 - Step 6: Final answer
x = 59,034.39
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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.