Finding the Fourth Proportional to 92,979.68, 128,311.44 and 52,701.06
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Solution
The fourth proportional to 92,979.68, 128,311.44 and 52,701.06 is: 72,727.17
Step by Step Solution
- Step 1: Write the proportion equation
92,979.68 : 128,311.44 = 52,701.06 : x - Step 2: Convert to fraction form
92,979.68/128,311.44 = 52,701.06/x - Step 3: Cross multiply
92,979.68x = 128,311.44 × 52,701.06 - Step 4: Simplify right side
92,979.68x = 6,762,148,898.13 - Step 5: Solve for x
x = 6,762,148,898.13/92,979.68 - Step 6: Final answer
x = 72,727.17
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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.