Finding the Fourth Proportional to 92,974.84, 128,305.74 and 50,534.20
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Solution
The fourth proportional to 92,974.84, 128,305.74 and 50,534.20 is: 69,737.45
Step by Step Solution
- Step 1: Write the proportion equation
92,974.84 : 128,305.74 = 50,534.20 : x - Step 2: Convert to fraction form
92,974.84/128,305.74 = 50,534.20/x - Step 3: Cross multiply
92,974.84x = 128,305.74 × 50,534.20 - Step 4: Simplify right side
92,974.84x = 6,483,827,926.31 - Step 5: Solve for x
x = 6,483,827,926.31/92,974.84 - Step 6: Final answer
x = 69,737.45
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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.