Finding the Fourth Proportional to 77,461.80, 115,904.70 and 56,725.80
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Solution
The fourth proportional to 77,461.80, 115,904.70 and 56,725.80 is: 84,877.80
Step by Step Solution
- Step 1: Write the proportion equation
77,461.80 : 115,904.70 = 56,725.80 : x - Step 2: Convert to fraction form
77,461.80/115,904.70 = 56,725.80/x - Step 3: Cross multiply
77,461.80x = 115,904.70 × 56,725.80 - Step 4: Simplify right side
77,461.80x = 6,574,786,831.26 - Step 5: Solve for x
x = 6,574,786,831.26/77,461.80 - Step 6: Final answer
x = 84,877.80
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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.