Finding the Fourth Proportional to 73,139.08, 100,931.93 and 39,605.08
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Solution
The fourth proportional to 73,139.08, 100,931.93 and 39,605.08 is: 54,655.01
Step by Step Solution
- Step 1: Write the proportion equation
73,139.08 : 100,931.93 = 39,605.08 : x - Step 2: Convert to fraction form
73,139.08/100,931.93 = 39,605.08/x - Step 3: Cross multiply
73,139.08x = 100,931.93 × 39,605.08 - Step 4: Simplify right side
73,139.08x = 3,997,417,162.20 - Step 5: Solve for x
x = 3,997,417,162.20/73,139.08 - Step 6: Final answer
x = 54,655.01
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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.