Finding the Fourth Proportional to 87,330.64, 120,420.93 and 58,987.12
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Solution
The fourth proportional to 87,330.64, 120,420.93 and 58,987.12 is: 81,337.82
Step by Step Solution
- Step 1: Write the proportion equation
87,330.64 : 120,420.93 = 58,987.12 : x - Step 2: Convert to fraction form
87,330.64/120,420.93 = 58,987.12/x - Step 3: Cross multiply
87,330.64x = 120,420.93 × 58,987.12 - Step 4: Simplify right side
87,330.64x = 7,103,283,848.42 - Step 5: Solve for x
x = 7,103,283,848.42/87,330.64 - Step 6: Final answer
x = 81,337.82
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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.