Finding the Fourth Proportional to 75,508.84, 104,686.51 and 71,309.80
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Solution
The fourth proportional to 75,508.84, 104,686.51 and 71,309.80 is: 98,864.90
Step by Step Solution
- Step 1: Write the proportion equation
75,508.84 : 104,686.51 = 71,309.80 : x - Step 2: Convert to fraction form
75,508.84/104,686.51 = 71,309.80/x - Step 3: Cross multiply
75,508.84x = 104,686.51 × 71,309.80 - Step 4: Simplify right side
75,508.84x = 7,465,174,090.80 - Step 5: Solve for x
x = 7,465,174,090.80/75,508.84 - Step 6: Final answer
x = 98,864.90
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Why These Related Problems?
These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.