Finding the Fourth Proportional to 90,477.19, 135,652.20 and 39,852.19
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Solution
The fourth proportional to 90,477.19, 135,652.20 and 39,852.19 is: 59,750.28
Step by Step Solution
- Step 1: Write the proportion equation
90,477.19 : 135,652.20 = 39,852.19 : x - Step 2: Convert to fraction form
90,477.19/135,652.20 = 39,852.19/x - Step 3: Cross multiply
90,477.19x = 135,652.20 × 39,852.19 - Step 4: Simplify right side
90,477.19x = 5,406,037,248.32 - Step 5: Solve for x
x = 5,406,037,248.32/90,477.19 - Step 6: Final answer
x = 59,750.28
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.