Finding the Fourth Proportional to 97,720.13, 134,856.06 and 54,698.55
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Solution
The fourth proportional to 97,720.13, 134,856.06 and 54,698.55 is: 75,485.28
Step by Step Solution
- Step 1: Write the proportion equation
97,720.13 : 134,856.06 = 54,698.55 : x - Step 2: Convert to fraction form
97,720.13/134,856.06 = 54,698.55/x - Step 3: Cross multiply
97,720.13x = 134,856.06 × 54,698.55 - Step 4: Simplify right side
97,720.13x = 7,376,430,940.71 - Step 5: Solve for x
x = 7,376,430,940.71/97,720.13 - Step 6: Final answer
x = 75,485.28
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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.