Finding the Fourth Proportional to 88,215.35, 121,737.74 and 47,929.09
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Solution
The fourth proportional to 88,215.35, 121,737.74 and 47,929.09 is: 66,142.44
Step by Step Solution
- Step 1: Write the proportion equation
88,215.35 : 121,737.74 = 47,929.09 : x - Step 2: Convert to fraction form
88,215.35/121,737.74 = 47,929.09/x - Step 3: Cross multiply
88,215.35x = 121,737.74 × 47,929.09 - Step 4: Simplify right side
88,215.35x = 5,834,779,123.51 - Step 5: Solve for x
x = 5,834,779,123.51/88,215.35 - Step 6: Final answer
x = 66,142.44
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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.