Finding the Fourth Proportional to 70,616.13, 105,924.09 and 18,025.62
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Solution
The fourth proportional to 70,616.13, 105,924.09 and 18,025.62 is: 27,038.40
Step by Step Solution
- Step 1: Write the proportion equation
70,616.13 : 105,924.09 = 18,025.62 : x - Step 2: Convert to fraction form
70,616.13/105,924.09 = 18,025.62/x - Step 3: Cross multiply
70,616.13x = 105,924.09 × 18,025.62 - Step 4: Simplify right side
70,616.13x = 1,909,347,395.19 - Step 5: Solve for x
x = 1,909,347,395.19/70,616.13 - Step 6: Final answer
x = 27,038.40
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.