Finding the Fourth Proportional to 74,603.68, 102,946.80 and 42,765.28
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Solution
The fourth proportional to 74,603.68, 102,946.80 and 42,765.28 is: 59,012.49
Step by Step Solution
- Step 1: Write the proportion equation
74,603.68 : 102,946.80 = 42,765.28 : x - Step 2: Convert to fraction form
74,603.68/102,946.80 = 42,765.28/x - Step 3: Cross multiply
74,603.68x = 102,946.80 × 42,765.28 - Step 4: Simplify right side
74,603.68x = 4,402,548,727.10 - Step 5: Solve for x
x = 4,402,548,727.10/74,603.68 - Step 6: Final answer
x = 59,012.49
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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.