Finding the Fourth Proportional to 77,887.08, 107,484.20 and 42,077.08
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Solution
The fourth proportional to 77,887.08, 107,484.20 and 42,077.08 is: 58,066.39
Step by Step Solution
- Step 1: Write the proportion equation
77,887.08 : 107,484.20 = 42,077.08 : x - Step 2: Convert to fraction form
77,887.08/107,484.20 = 42,077.08/x - Step 3: Cross multiply
77,887.08x = 107,484.20 × 42,077.08 - Step 4: Simplify right side
77,887.08x = 4,522,621,282.14 - Step 5: Solve for x
x = 4,522,621,282.14/77,887.08 - Step 6: Final answer
x = 58,066.39
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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.