Finding the Fourth Proportional to 93,121.17, 128,509.74 and 57,331.55
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Solution
The fourth proportional to 93,121.17, 128,509.74 and 57,331.55 is: 79,119.09
Step by Step Solution
- Step 1: Write the proportion equation
93,121.17 : 128,509.74 = 57,331.55 : x - Step 2: Convert to fraction form
93,121.17/128,509.74 = 57,331.55/x - Step 3: Cross multiply
93,121.17x = 128,509.74 × 57,331.55 - Step 4: Simplify right side
93,121.17x = 7,367,661,941.75 - Step 5: Solve for x
x = 7,367,661,941.75/93,121.17 - Step 6: Final answer
x = 79,119.09
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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.