Finding the Fourth Proportional to 85,498.74, 117,987.96 and 47,772.99
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Solution
The fourth proportional to 85,498.74, 117,987.96 and 47,772.99 is: 65,926.56
Step by Step Solution
- Step 1: Write the proportion equation
85,498.74 : 117,987.96 = 47,772.99 : x - Step 2: Convert to fraction form
85,498.74/117,987.96 = 47,772.99/x - Step 3: Cross multiply
85,498.74x = 117,987.96 × 47,772.99 - Step 4: Simplify right side
85,498.74x = 5,636,637,633.20 - Step 5: Solve for x
x = 5,636,637,633.20/85,498.74 - Step 6: Final answer
x = 65,926.56
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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.