Finding the Fourth Proportional to 73,502.10, 101,430.09 and 39,968.10
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Solution
The fourth proportional to 73,502.10, 101,430.09 and 39,968.10 is: 55,154.45
Step by Step Solution
- Step 1: Write the proportion equation
73,502.10 : 101,430.09 = 39,968.10 : x - Step 2: Convert to fraction form
73,502.10/101,430.09 = 39,968.10/x - Step 3: Cross multiply
73,502.10x = 101,430.09 × 39,968.10 - Step 4: Simplify right side
73,502.10x = 4,053,967,980.13 - Step 5: Solve for x
x = 4,053,967,980.13/73,502.10 - Step 6: Final answer
x = 55,154.45
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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.