Finding the Fourth Proportional to 77,155.82, 115,671.44 and 70,927.99
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Solution
The fourth proportional to 77,155.82, 115,671.44 and 70,927.99 is: 106,334.73
Step by Step Solution
- Step 1: Write the proportion equation
77,155.82 : 115,671.44 = 70,927.99 : x - Step 2: Convert to fraction form
77,155.82/115,671.44 = 70,927.99/x - Step 3: Cross multiply
77,155.82x = 115,671.44 × 70,927.99 - Step 4: Simplify right side
77,155.82x = 8,204,343,115.74 - Step 5: Solve for x
x = 8,204,343,115.74/77,155.82 - Step 6: Final answer
x = 106,334.73
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.