Finding the Fourth Proportional to 75,931.88, 104,785.99 and 42,397.88
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Solution
The fourth proportional to 75,931.88, 104,785.99 and 42,397.88 is: 58,509.07
Step by Step Solution
- Step 1: Write the proportion equation
75,931.88 : 104,785.99 = 42,397.88 : x - Step 2: Convert to fraction form
75,931.88/104,785.99 = 42,397.88/x - Step 3: Cross multiply
75,931.88x = 104,785.99 × 42,397.88 - Step 4: Simplify right side
75,931.88x = 4,442,703,199.78 - Step 5: Solve for x
x = 4,442,703,199.78/75,931.88 - Step 6: Final answer
x = 58,509.07
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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.