Finding the Fourth Proportional to 77,972.96, 107,602.74 and 42,162.99
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Solution
The fourth proportional to 77,972.96, 107,602.74 and 42,162.99 is: 58,184.96
Step by Step Solution
- Step 1: Write the proportion equation
77,972.96 : 107,602.74 = 42,162.99 : x - Step 2: Convert to fraction form
77,972.96/107,602.74 = 42,162.99/x - Step 3: Cross multiply
77,972.96x = 107,602.74 × 42,162.99 - Step 4: Simplify right side
77,972.96x = 4,536,853,250.59 - Step 5: Solve for x
x = 4,536,853,250.59/77,972.96 - Step 6: Final answer
x = 58,184.96
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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.