Finding the Fourth Proportional to 101,760.32, 140,427.15 and 56,430.99
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Solution
The fourth proportional to 101,760.32, 140,427.15 and 56,430.99 is: 77,873.61
Step by Step Solution
- Step 1: Write the proportion equation
101,760.32 : 140,427.15 = 56,430.99 : x - Step 2: Convert to fraction form
101,760.32/140,427.15 = 56,430.99/x - Step 3: Cross multiply
101,760.32x = 140,427.15 × 56,430.99 - Step 4: Simplify right side
101,760.32x = 7,924,443,097.38 - Step 5: Solve for x
x = 7,924,443,097.38/101,760.32 - Step 6: Final answer
x = 77,873.61
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1.5x scale
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.