Finding the Fourth Proportional to 76,938.40, 106,174.56 and 42,944.92
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Solution
The fourth proportional to 76,938.40, 106,174.56 and 42,944.92 is: 59,263.75
Step by Step Solution
- Step 1: Write the proportion equation
76,938.40 : 106,174.56 = 42,944.92 : x - Step 2: Convert to fraction form
76,938.40/106,174.56 = 42,944.92/x - Step 3: Cross multiply
76,938.40x = 106,174.56 × 42,944.92 - Step 4: Simplify right side
76,938.40x = 4,559,657,985.24 - Step 5: Solve for x
x = 4,559,657,985.24/76,938.40 - Step 6: Final answer
x = 59,263.75
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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.