Finding the Fourth Proportional to 77,966.96, 107,594.46 and 42,156.99
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Solution
The fourth proportional to 77,966.96, 107,594.46 and 42,156.99 is: 58,176.68
Step by Step Solution
- Step 1: Write the proportion equation
77,966.96 : 107,594.46 = 42,156.99 : x - Step 2: Convert to fraction form
77,966.96/107,594.46 = 42,156.99/x - Step 3: Cross multiply
77,966.96x = 107,594.46 × 42,156.99 - Step 4: Simplify right side
77,966.96x = 4,535,858,574.28 - Step 5: Solve for x
x = 4,535,858,574.28/77,966.96 - Step 6: Final answer
x = 58,176.68
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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.