Finding the Fourth Proportional to 77,642.91, 107,214.44 and 73,657.08
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Solution
The fourth proportional to 77,642.91, 107,214.44 and 73,657.08 is: 101,710.54
Step by Step Solution
- Step 1: Write the proportion equation
77,642.91 : 107,214.44 = 73,657.08 : x - Step 2: Convert to fraction form
77,642.91/107,214.44 = 73,657.08/x - Step 3: Cross multiply
77,642.91x = 107,214.44 × 73,657.08 - Step 4: Simplify right side
77,642.91x = 7,897,102,215.95 - Step 5: Solve for x
x = 7,897,102,215.95/77,642.91 - Step 6: Final answer
x = 101,710.54
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Double scale
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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.