Finding the Fourth Proportional to 85,845.60, 128,659.05 and 62,444.70
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Solution
The fourth proportional to 85,845.60, 128,659.05 and 62,444.70 is: 93,587.51
Step by Step Solution
- Step 1: Write the proportion equation
85,845.60 : 128,659.05 = 62,444.70 : x - Step 2: Convert to fraction form
85,845.60/128,659.05 = 62,444.70/x - Step 3: Cross multiply
85,845.60x = 128,659.05 × 62,444.70 - Step 4: Simplify right side
85,845.60x = 8,034,075,779.54 - Step 5: Solve for x
x = 8,034,075,779.54/85,845.60 - Step 6: Final answer
x = 93,587.51
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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.