Finding the Fourth Proportional to 76,351.36, 105,465.86 and 63,646.08
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Solution
The fourth proportional to 76,351.36, 105,465.86 and 63,646.08 is: 87,915.77
Step by Step Solution
- Step 1: Write the proportion equation
76,351.36 : 105,465.86 = 63,646.08 : x - Step 2: Convert to fraction form
76,351.36/105,465.86 = 63,646.08/x - Step 3: Cross multiply
76,351.36x = 105,465.86 × 63,646.08 - Step 4: Simplify right side
76,351.36x = 6,712,488,562.83 - Step 5: Solve for x
x = 6,712,488,562.83/76,351.36 - Step 6: Final answer
x = 87,915.77
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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.