Finding the Fourth Proportional to 115,741.32, 159,656.58 and 67,985.88
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Solution
The fourth proportional to 115,741.32, 159,656.58 and 67,985.88 is: 93,781.49
Step by Step Solution
- Step 1: Write the proportion equation
115,741.32 : 159,656.58 = 67,985.88 : x - Step 2: Convert to fraction form
115,741.32/159,656.58 = 67,985.88/x - Step 3: Cross multiply
115,741.32x = 159,656.58 × 67,985.88 - Step 4: Simplify right side
115,741.32x = 10,854,393,089.09 - Step 5: Solve for x
x = 10,854,393,089.09/115,741.32 - Step 6: Final answer
x = 93,781.49
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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.