Finding the Fourth Proportional to 77,905.19, 107,509.23 and 42,095.19
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Solution
The fourth proportional to 77,905.19, 107,509.23 and 42,095.19 is: 58,091.40
Step by Step Solution
- Step 1: Write the proportion equation
77,905.19 : 107,509.23 = 42,095.19 : x - Step 2: Convert to fraction form
77,905.19/107,509.23 = 42,095.19/x - Step 3: Cross multiply
77,905.19x = 107,509.23 × 42,095.19 - Step 4: Simplify right side
77,905.19x = 4,525,621,253.13 - Step 5: Solve for x
x = 4,525,621,253.13/77,905.19 - Step 6: Final answer
x = 58,091.40
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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.