Finding the Fourth Proportional to 81,686.52, 112,714.15 and 51,055.99
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Solution
The fourth proportional to 81,686.52, 112,714.15 and 51,055.99 is: 70,448.99
Step by Step Solution
- Step 1: Write the proportion equation
81,686.52 : 112,714.15 = 51,055.99 : x - Step 2: Convert to fraction form
81,686.52/112,714.15 = 51,055.99/x - Step 3: Cross multiply
81,686.52x = 112,714.15 × 51,055.99 - Step 4: Simplify right side
81,686.52x = 5,754,732,515.26 - Step 5: Solve for x
x = 5,754,732,515.26/81,686.52 - Step 6: Final answer
x = 70,448.99
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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.