Finding the Fourth Proportional to 78,742.18, 108,660.09 and 44,746.12
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Solution
The fourth proportional to 78,742.18, 108,660.09 and 44,746.12 is: 61,747.31
Step by Step Solution
- Step 1: Write the proportion equation
78,742.18 : 108,660.09 = 44,746.12 : x - Step 2: Convert to fraction form
78,742.18/108,660.09 = 44,746.12/x - Step 3: Cross multiply
78,742.18x = 108,660.09 × 44,746.12 - Step 4: Simplify right side
78,742.18x = 4,862,117,426.35 - Step 5: Solve for x
x = 4,862,117,426.35/78,742.18 - Step 6: Final answer
x = 61,747.31
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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.