Finding the Fourth Proportional to 78,386.79, 108,106.74 and 52,888.80
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Solution
The fourth proportional to 78,386.79, 108,106.74 and 52,888.80 is: 72,941.32
Step by Step Solution
- Step 1: Write the proportion equation
78,386.79 : 108,106.74 = 52,888.80 : x - Step 2: Convert to fraction form
78,386.79/108,106.74 = 52,888.80/x - Step 3: Cross multiply
78,386.79x = 108,106.74 × 52,888.80 - Step 4: Simplify right side
78,386.79x = 5,717,635,750.51 - Step 5: Solve for x
x = 5,717,635,750.51/78,386.79 - Step 6: Final answer
x = 72,941.32
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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.