Finding the Fourth Proportional to 84,457.35, 115,930.26 and 74,683.06
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Solution
The fourth proportional to 84,457.35, 115,930.26 and 74,683.06 is: 102,513.59
Step by Step Solution
- Step 1: Write the proportion equation
84,457.35 : 115,930.26 = 74,683.06 : x - Step 2: Convert to fraction form
84,457.35/115,930.26 = 74,683.06/x - Step 3: Cross multiply
84,457.35x = 115,930.26 × 74,683.06 - Step 4: Simplify right side
84,457.35x = 8,658,026,273.57 - Step 5: Solve for x
x = 8,658,026,273.57/84,457.35 - Step 6: Final answer
x = 102,513.59
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.