Finding the Fourth Proportional to 93,438.18, 128,940.66 and 53,146.26
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Solution
The fourth proportional to 93,438.18, 128,940.66 and 53,146.26 is: 73,339.55
Step by Step Solution
- Step 1: Write the proportion equation
93,438.18 : 128,940.66 = 53,146.26 : x - Step 2: Convert to fraction form
93,438.18/128,940.66 = 53,146.26/x - Step 3: Cross multiply
93,438.18x = 128,940.66 × 53,146.26 - Step 4: Simplify right side
93,438.18x = 6,852,713,840.93 - Step 5: Solve for x
x = 6,852,713,840.93/93,438.18 - Step 6: Final answer
x = 73,339.55
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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.